CAST organizes Universal Design for Learning around designing multiple means of which three things?
Choose an answer, then check it.
Education · Classroom and Learner Support
Inclusive Teaching
On this page 9 sections
In 30 seconds
Inclusive teaching designs instruction so the widest range of learners can reach the same goals without having to ask first. Its dominant framework, Universal Design for Learning A framework developed by CAST that plans multiple ways to engage learners, present information, and let students demonstrate learning, built into goals, methods, materials, and assessments from the start. Full entry →, comes from architecture: build the ramp into the plan instead of bolting it on later. U.S. law names UDL and sets a floor of digital accessibility. Two cautions follow. A seat in the general classroom is not inclusion without access, support, and belonging, and the efficacy evidence for UDL as a package is thinner than its official endorsement suggests.
Why this matters
You will teach students who cannot hear the video, cannot decode the worksheet, cannot type the essay, or cannot yet read academic English, and you will usually not know which is which in advance. Designing for that range up front costs less than negotiating twenty retrofits later, and in U.S. public schools parts of it are legally required rather than optional. Teacher preparation programs, hiring panels, and graduate seminars all expect the vocabulary: accommodation, Modification A change to what a student is expected to learn or demonstrate, altering the standard itself rather than the route a student takes to it. Full entry →, accessibility, Least restrictive environment The U.S. federal requirement that students with disabilities be educated with peers without disabilities to the maximum extent appropriate, with removal justified only when supplementary aids and services cannot make regular classes work. Full entry →. Knowing what the research does and does not show protects you from the two standard failure modes, dismissing inclusion as ideology and repeating vendor claims the evidence will not carry.
The college version
Inclusion is not a seat
Inclusive teaching is the design of instruction so that the widest possible range of learners can reach the same goals. The word gets used loosely, and the loosest use is also the most common: treating inclusion as a location. A student who sits in the general education classroom all day but cannot read the handout, cannot hear the video, and is never called on has been placed, not included. UNESCO frames inclusion internationally as identifying and removing the barriers that keep learners out, barriers of disability, language, gender, ethnic or social origin, and economic condition, which makes it a claim about curriculum and pedagogy rather than about seating charts. U.S. federal law arrives at the same place from a different direction. IDEA's least restrictive environment provision requires that, to the maximum extent appropriate, children with disabilities be educated with children who are not disabled, and that removal from the regular educational environment happen only when education in regular classes with the use of supplementary aids and services cannot be achieved satisfactorily. The operative phrase is supplementary aids and services. The statute does not promise that placement by itself will work; it conditions placement on support. So three things must be true at once: access to the material, the support needed to work with it, and belonging as a full member of the class. Remove any one of the three and inclusion has not happened, whatever the roster says.
Where universal design came from
Universal design The practice of building products and environments to be usable by as many people as possible, to the greatest extent possible, without later adaptation or a separate specialized version. Full entry → began in architecture and product design, not in education. Ronald Mace, an architect who used a wheelchair, founded the center at North Carolina State University that became the Center for Universal Design, established in 1989 as the Center for Accessible Housing under a federal disability research grant. The center defined universal design as the design of products and environments to be usable by all people, to the greatest extent possible, without the need for adaptation or specialized design, and in 1997 published seven Principles of Universal Design, among them equitable use, flexibility in use, perceptible information, and tolerance for error. The everyday illustration is the curb cut. It was cut into the sidewalk for wheelchair users; now watch one for five minutes and you will see strollers, suitcases, hand trucks, and scooters. The design argument is about sequence, not generosity: a ramp drawn into the original plans is cheap and nearly invisible, while the same ramp added twelve years later is expensive and looks like an apology. CAST, a U.S. nonprofit research organization, carried the idea into instruction as Universal Design for Learning, arguing that variability among learners is predictable rather than exceptional and that the sensible response is to adjust the environment instead of trying to fix the learner. CAST's UDL Guidelines reached version 3.0 in July 2024.
The three principles, and the plus-one habit
CAST organizes UDL around designing multiple means of engagement, multiple means of representation, and multiple means of action and expression: roughly, why a learner invests, how information reaches them, and how they show what they know. The principles are meant to be applied to the whole design, to goals, methods, materials, assessments, and the learning environment, and applied before students arrive rather than after a request. The obvious objection is cost. Kirsten Behling and Thomas Tobin's answer, now widely used in higher education, is the Plus-one approach An incremental way to apply inclusive design by locating the points where students reliably get stuck and adding exactly one additional option at each of them. Full entry →: rather than rebuilding a course, find the places where students reliably get stuck, the pinch points, and add exactly one more option at each. One video gains a transcript. One assignment accepts a narrated slide deck as well as an essay. One set of office hours also runs online. One difficult reading gains a two-minute screencast in which the instructor talks through the hardest paragraph. Plus one is not a lowering of the bar. The goal stays fixed and only the number of routes to it increases. It is also honest about teacher time, the constraint that quietly kills most inclusive design initiatives: one added option per course per term accumulates, while a demand for total redesign produces a workshop, a folder, and no change.
Accessibility is the floor, not a favor
Access is not a personal favor that starts when a student discloses something. Captions on video, alternative text on images, documents with real heading structure rather than bold text pretending to be headings, adequate color contrast, and files that work with a screen reader are baseline conditions of a usable course, and most of them take minutes. The technical vocabulary comes from the Web Content Accessibility Guidelines An international standard from the World Wide Web Consortium that organizes digital access requirements under four principles, perceivable, operable, understandable, and robust, at conformance levels A, AA, and AAA. Full entry →, developed by the World Wide Web Consortium's Web Accessibility Initiative. WCAG sorts its requirements under four principles, that content be perceivable, operable, understandable, and robust, and grades success criteria at three conformance levels, A, AA, and AAA; version 2.1 was published in 2018 and version 2.2 in 2023. In the United States this stopped being purely advisory in 2024, when the Department of Justice issued a rule under Title II of the Americans with Disabilities Act requiring state and local government entities, explicitly including public school districts, community colleges, and public universities, to bring web content and mobile apps into conformance with WCAG 2.1 Level AA, with compliance dates of April 26, 2027 for larger entities and April 26, 2028 for smaller ones. This lesson describes U.S. federal requirements at a general level and is not legal advice.
Accommodations, modifications, and the legal floor
An accommodation changes how a student accesses instruction or demonstrates learning; it does not change what the student is expected to learn or the standard the work is judged against. Accommodations are conventionally sorted into four categories: presentation (a screen reader, a read-aloud, large print), response (typing or dictating instead of handwriting), setting (a separate quiet room), and timing or scheduling (extended time, scheduled breaks). A modification changes the expectation itself, through fewer or different content standards, a shorter text at a lower level, or an assessment covering less material. Both can be appropriate, and neither is a euphemism for the other. The difference has consequences that follow a student for years: a student receiving accommodations is being held to the same standard by a different route, while a student receiving modifications is being held to a different standard, which affects grades, course credit, and in some jurisdictions a diploma. Three U.S. federal laws set the floor here. IDEA is the special education statute; its least restrictive environment provision is described above, and eligibility and program procedure belong to the special education topic. Section 504 of the Rehabilitation Act of 1973 prohibits disability discrimination in programs receiving federal financial assistance, and under its regulations a district must provide a free appropriate public education to each qualified student with a disability, consisting of regular or special education and related aids and services designed to meet that student's individual needs as adequately as the needs of students without disabilities are met. Section 504 protects a person who has a physical or mental impairment substantially limiting a major life activity, who has a record of one, or who is regarded as having one, a wider net than IDEA's eligibility categories. Title II of the ADA extends nondiscrimination obligations to state and local government entities regardless of federal funding, which is where the web accessibility rule originates. U.S. jurisdiction only, and none of this is individualized legal advice.
What the evidence actually supports
UDL's official standing is unusually strong for an instructional framework. Federal law defines it. The Higher Education Opportunity Act definition, codified at 20 U.S.C. 1003(24), calls universal design for learning a scientifically valid framework for guiding educational practice that provides flexibility in how information is presented, how students respond or demonstrate knowledge and skills, and how students are engaged, and that reduces barriers while maintaining high achievement expectations for all students, including students with disabilities and students who are limited English proficient. The Elementary and Secondary Education Act, as amended by the Every Student Succeeds Act, adopts that definition by cross-reference and requires that state academic assessments be developed, to the extent practicable, using the principles of universal design for learning. The research record is thinner than that language implies. A systematic review of UDL in pre-K to grade 12 classrooms found only thirteen qualifying studies, reported that efficacy varied considerably within and across them with effect sizes ranging from small to large, and noted that authors were inconsistent about which UDL guidelines their interventions had actually implemented. A 2023 systematic review and meta-analysis covering 2015 to 2021 likewise located thirteen empirical studies across six countries, observed that they mainly used a single-group pre-post design, and reported an implausibly large pooled effect alongside considerable heterogeneity, a combination that says more about a small and methodologically uneven literature than about any real effect size. Single-group designs cannot separate an intervention from ordinary improvement over a term. None of this means UDL is wrong. It means the accurate description is narrower than the statute: a widely endorsed design framework whose individual components, captioning, explicit criteria, multiple response modes, removing barriers that were never part of the learning goal, are defensible on their own, and whose effectiveness as a branded package has not been established by the kind of research the phrase scientifically valid normally implies. Saying that in a seminar puts you ahead of both the enthusiast and the cynic.
Language, and following the person
Two conventions compete. Person-first language Wording that names the individual before the condition, as in a student with a learning disability. Full entry → names the individual before the condition: a student with autism, a person who uses a wheelchair. Identity-first language Wording that places the characteristic first, as in an autistic student, treating it as part of who the person is rather than an attachment. Full entry → puts the characteristic first: an autistic student, a Deaf student, on the ground that the characteristic is part of who someone is rather than an unfortunate attachment. Both are in current use and neither is universally preferred. Parts of the autistic and Deaf communities favor identity-first construction, while many organizations and style guides default to person-first. Guidance from the ADA National Network resolves this the only way that actually works in a classroom: ask, and then use what the person tells you. What is not contested is what to avoid, including wheelchair-bound, handicapped, suffers from, condescending substitutes such as special or differently-abled, and framing disabled people as either tragic or inspirational. The practical rule is small and unceremonious. Follow a student's stated preference. Use person-first as a default when you do not know it. Correct yourself briefly when you get it wrong, and move on rather than making the student manage your embarrassment.
Multilingual learners and academic language
The most consequential misjudgment teachers make about multilingual students is treating conversational fluency as evidence of academic readiness. A student can trade jokes at lunch in English and still be unable to follow a textbook paragraph on erosion, because the two make different demands. Everyday talk is context-rich, repetitive, and interactive, with a face in front of you supplying correction. Academic language The dense, abstract vocabulary and sentence structure of textbooks, lectures, and written assignments, which differs sharply from everyday conversational speech. Full entry → is dense, abstract, unsupported by gesture or shared situation, and built from sentence structures that occur almost nowhere else. A study of English learners in districts regarded as most successful estimated that oral proficiency took roughly three to five years to develop and academic English roughly four to seven, which is why one-year transition policies were judged unrealistic. The instructional response is not to wait for language before teaching content. A federal practice guide on teaching academic content and literacy to English learners rates two recommendations at its highest evidence level: teach a focused set of academic vocabulary words intensively across several days using varied activities, and integrate oral and written English language instruction into content-area teaching. Regular structured writing practice and small-group intervention are also recommended, at lower evidence ratings. Teach the content and the language of that content at the same time.
Designing for the whole class
Most inclusive practice is unglamorous. Predictable structure, the same place for the agenda and the same routine for submitting work, reduces the working-memory cost of figuring out the class itself, a cost every student pays and some pay heavily. Explicit criteria do the same for assessment: publish what a strong response looks like instead of asking students to infer it, since inference quietly advantages the students who already knew. Varied response modes let a student show understanding without first clearing an unrelated hurdle. And when a class looks disengaged, check access before diagnosing motivation. Silence after a video may mean the video had no captions. A blank page may mean the reading sat three grade levels above the assignment. An unfinished lab report may mean the template existed only on paper. Access failures and motivation failures look identical from the front of the room, and only one of them is fixed by asking students to try harder.
Eli explains
The same idea, in plain words
Explain it like I’m 10
Imagine a class where the only way to prove you read the book is a five-paragraph essay. If you understood every chapter but freeze in front of a blank page, that essay is measuring your writing stamina, not your reading. Inclusive teaching is the habit of noticing where the route to the goal gets narrow, and then opening a second route to the same place. The goal itself never moves. Everyone still has to show they understood the book. What changes is how many doors lead into the room. A few students will still need one specific door built for them. Most just need more than one door to already exist.
Picture it like this
Think of a curb cut, the little ramp where the sidewalk slopes down to meet the street. It was cut for people using wheelchairs. Now watch one for five minutes: parents with strollers, travelers dragging suitcases, delivery workers with hand trucks, a kid on a scooter. Built for a few, used by nearly everyone, and completely invisible once it exists.
Where the picture stops working
The curb cut is poured once and stays poured. A lesson is rebuilt every day, so inclusive design is a habit rather than a construction project. The ramp also gets people onto the sidewalk without teaching anybody anything, and access is a precondition for learning rather than learning itself. And every wheelchair uses a curb cut the same way, while some students need something specific that no general design supplies: a sign language interpreter, a screen reader tuned to their settings, a plan written for them alone. Designing well reduces how many individual arrangements are needed. It does not reduce that number to zero, and a teacher who claims it does has stopped listening.
Worked example
Ms. Ruiz teaches eighth-grade earth science. Her erosion lesson is a nine-minute video with no captions, a two-page reading written at a tenth-grade level, and one product, a written lab report. Her class includes a student who is hard of hearing, a student reading three years below grade level, a student who arrived in the country eight months ago, and a student with a fine-motor disability who writes slowly. Applying plus one at each pinch point: she turns on captions and posts the transcript, which takes about a minute and makes the video searchable for everyone; she records a two-minute screencast reading the hardest paragraph aloud while highlighting key terms; she front-loads five academic words, deposition, sediment, weathering, gradient, runoff, with images and repeated use across the week; and she accepts either a written report or a narrated slide walkthrough, graded against the same rubric. Notice what she did not do. She did not shorten the content standard for anyone, which would have been a modification rather than an accommodation. And the student whose plan calls for extended time still receives extended time, because good design reduces the number of individual accommodations needed without eliminating them.
Key takeaway
Inclusive teaching means designing the lesson so that the widest range of students can reach the same goal without asking permission first, and then supplying the individual supports that design cannot anticipate. Judge it by access, support, and belonging, not by where a student sits.
Quick check
3 questions here, of 5 in this lesson’s practice set. Answers stay hidden until you check.
A teacher replaces the grade-level novel with a shorter book at a lower reading level and assesses a reduced set of standards. Is this an accommodation or a modification, and why?
Choose an answer, then check it.
Ms. Okafor's students consistently stall on one dense paragraph in an assigned reading. Which change best fits the plus-one approach to that pinch point?
Choose an answer, then check it.
Study tools & related lessonsYou’ll learn to · Common mistakes · Easily confused · Key vocabulary · Related
You’ll learn to
- Define inclusive teaching and distinguish it from physical placement in a general education classroom.
- Explain the architectural origin of universal design and describe CAST's three UDL principles.
- Distinguish accommodations from modifications and explain why the difference matters for standards, grading, and credit.
- Apply plus-one design to specific barriers in a lesson while holding the learning goal fixed.
- Evaluate the evidence base for UDL, separating statutory endorsement from efficacy research.
- Explain why conversational fluency in English does not indicate academic readiness, and choose language about disability by following the person's own preference.
Common mistakes
Treating inclusion as a placement decision, so that a student assigned to the general education classroom is counted as included.
Placement is a precondition, not the thing itself. IDEA conditions general-classroom education on supplementary aids and services, and inclusion requires access to the material, the support needed to work with it, and membership in the class. Ask what the student did today, not where they sat.
Calling a change an accommodation when it actually changes the standard, for example cutting an assignment in half and describing it as extra support.
An accommodation changes how a student accesses or demonstrates learning; a modification changes what they are expected to learn. Shortening content is a modification. Misnaming it misreports the student's achievement to every teacher, transcript, and program that comes later.
Treating accessibility as a favor that begins when a student discloses a disability and requests it.
Captions, alternative text, heading structure, and readable contrast are baseline design that costs minutes, benefits students who never disclose anything, and in U.S. public institutions is being brought under an ADA Title II requirement to meet WCAG 2.1 Level AA. Build it in before anyone asks.
Reading a multilingual student's easy conversation as evidence that they no longer need language support.
Conversational fluency and academic language develop on different timelines, with estimates of roughly three to five years for oral proficiency and four to seven for academic English. Keep teaching academic vocabulary and the language of the discipline alongside the content.
Applying one blanket rule about disability language, such as always using person-first phrasing, and correcting students who do otherwise.
Person-first and identity-first constructions are both current, and preferences differ by person and community. Ask, use what the person tells you, default to person-first only when you do not know, and treat someone's self-description as authoritative about themselves.
Easily confused
Accommodation vs. Modification
An accommodation changes the route while holding the destination fixed: extended time, a screen reader, dictation, a quiet room. A modification changes the destination: fewer standards, an easier text, an assessment covering less content. Both can be legitimate, but only one leaves the student on the same standard, which is why the labels matter for grading and credit.
Accessibility vs. Accommodation
Accessibility is designed into the material for everyone in advance, so no one has to identify themselves to use it. An accommodation is an individual arrangement provided in response to a documented need. A captioned video is accessibility; a note-taker assigned to one student is an accommodation. Good accessibility reduces how many accommodations are necessary, but never to none.
Universal design (architecture) vs. Universal Design for Learning
The original idea concerns physical products and environments usable without adaptation, and is finished when the building is built. UDL applies the same design logic to instruction, where the artifact is rebuilt every lesson and the target is not usability but learning, so options in engagement, representation, and expression have to be planned repeatedly rather than installed once.
Inclusion vs. Placement in the general education classroom
Placement is where a student is assigned. Inclusion is whether that student can reach the material, has the support to work with it, and is treated as a member of the class. The statutory phrase supplementary aids and services is the giveaway: federal law treats regular-class education as something to be made to work, not something that works automatically.
Conversational fluency vs. Academic language
Conversation is context-rich, repetitive, and interactively corrected, and it develops in roughly three to five years by one widely cited estimate. Academic language is dense, abstract, and unsupported by shared situation, and it took four to seven years in the same study. A student can be fully fluent socially and still need explicit instruction in the language of the discipline.
Statutory endorsement of UDL vs. Efficacy evidence for UDL
U.S. law defines universal design for learning as a scientifically valid framework and requires assessments to use its principles where practicable. Systematic reviews, by contrast, find small numbers of studies, inconsistent reporting of what was implemented, and a literature dominated by single-group designs. Policy status is a fact about legislation, not a finding about effects.
Key vocabulary
- Universal design
- The practice of building products and environments to be usable by as many people as possible, to the greatest extent possible, without later adaptation or a separate specialized version.
- Universal Design for Learning
- A framework developed by CAST that plans multiple ways to engage learners, present information, and let students demonstrate learning, built into goals, methods, materials, and assessments from the start.
- accommodation (disability access)
- A change to how a student accesses instruction or shows what they know that leaves the learning expectation and the grading standard untouched.
- Modification
- A change to what a student is expected to learn or demonstrate, altering the standard itself rather than the route a student takes to it.
- Least restrictive environment
- The U.S. federal requirement that students with disabilities be educated with peers without disabilities to the maximum extent appropriate, with removal justified only when supplementary aids and services cannot make regular classes work.
- Web Content Accessibility Guidelines
- An international standard from the World Wide Web Consortium that organizes digital access requirements under four principles, perceivable, operable, understandable, and robust, at conformance levels A, AA, and AAA.
- Plus-one approach
- An incremental way to apply inclusive design by locating the points where students reliably get stuck and adding exactly one additional option at each of them.
- Person-first language
- Wording that names the individual before the condition, as in a student with a learning disability.
- Identity-first language
- Wording that places the characteristic first, as in an autistic student, treating it as part of who the person is rather than an attachment.
- Academic language
- The dense, abstract vocabulary and sentence structure of textbooks, lectures, and written assignments, which differs sharply from everyday conversational speech.
Sources & references
- CAST Universal Design for Learning Guidelines (Version 3.0) — CAST, Inc.
- Universal Design for Learning (What We Do) — CAST, Inc.
- Center for Universal Design — College of Design, North Carolina State University
- 20 U.S.C. 1003(24) - Additional definitions: universal design for learning — U.S. Government Publishing Office, govinfo (United States Code, Title 20)
- 20 U.S.C. 7801(51) - ESEA definitions: universal design for learning — Legal Information Institute, Cornell Law School (United States Code, Title 20)
- 20 U.S.C. 6311(b)(2) - State plans: academic assessments — Legal Information Institute, Cornell Law School (United States Code, Title 20)
- IDEA Sec. 1412(a)(5) - Least restrictive environment — U.S. Department of Education, IDEA statute site (Office of Special Education Programs)
- About IDEA — U.S. Department of Education, Office of Special Education Programs
- Frequently Asked Questions: Section 504 and Free Appropriate Public Education (FAPE) — U.S. Department of Education, Office for Civil Rights
- Fact Sheet: New Rule on the Accessibility of Web Content and Mobile Apps Provided by State and Local Governments — U.S. Department of Justice, Civil Rights Division (ADA.gov)
- WCAG 2 Overview — World Wide Web Consortium (W3C), Web Accessibility Initiative
- Universal Design for Learning in Pre-K to Grade 12 Classrooms: A Systematic Review of Research (Exceptionality, 25(2), 116-138) — Min Wook Ok, Kavita Rao, Brian R. Bryant, Dennis McDougall; Education Resources Information Center (ERIC EJ1135477), IES, U.S. Department of Education
- The Effectiveness of Universal Design for Learning: A Systematic Review of the Literature and Meta-Analysis (Cogent Education, 10(1), 2218191) — Qais I. Almeqdad, Abdullah M. Alodat, Mahmoud F. Alquraan, Mohammad A. Mohaidat, Ahmad K. Al-Makhzoomy; Education Resources Information Center (ERIC EJ1393594), IES, U.S. Department of Education
- Accommodations: Instructional and Testing Supports for Students with Disabilities (IRIS Module, Page 1) — The IRIS Center, Peabody College, Vanderbilt University (U.S. Department of Education, Office of Special Education Programs, Grant #H325E220001)
- Guidelines for Writing About People With Disabilities — ADA National Network / ADA Knowledge Translation Center (funded by the National Institute on Disability, Independent Living, and Rehabilitation Research)
- How Long Does It Take English Learners to Attain Proficiency? (Policy Report 2000-1) — Kenji Hakuta, Yuko Goto Butler, Daria Witt; University of California Linguistic Minority Research Institute; Education Resources Information Center (ERIC ED443275), IES, U.S. Department of Education
- Teaching Academic Content and Literacy to English Learners in Elementary and Middle School (IES Practice Guide, NCEE 2014-4012, April 2014) — Institute of Education Sciences, National Center for Education Evaluation and Regional Assistance, What Works Clearinghouse, U.S. Department of Education
- Inclusion in education — UNESCO
- Getting Started - The Plus One Approach — Centre for Transformative Learning, University of Limerick
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Researched 2026-08-18
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