Individuals with Disabilities Education Act

What the law requires

IDEA is the primary federal law governing special education in the United States. It has four parts:

Part A establishes general provisions and definitions.

Part B covers children ages 3–21 and is the core of most families' experience with IDEA. It requires that every eligible child receive a Free Appropriate Public Education (FAPE) — meaning the education must be provided at no cost to the family and must be appropriate to the child's unique needs. "Appropriate" is defined not as the best possible education but as one reasonably calculated to enable the child to make meaningful educational progress.

The Individualized Education Program (IEP) is the cornerstone document. It is developed collaboratively by a team that must include the parents, general and special education teachers, a school district representative, and when appropriate, the child. The IEP documents present levels of performance, annual goals, special education services, related services (such as speech-language therapy, occupational therapy, or physical therapy), and accommodations.

Part C covers early intervention services for infants and toddlers with disabilities from birth to age 3. Services are delivered through an Individualized Family Service Plan (IFSP) and are designed to support both the child and the family. Part C is particularly important for identifying developmental delays early and providing therapy in natural environments (home, childcare).

Part D funds state programs, technical assistance, and research.

Assistive technology under IDEA: Schools must consider assistive technology (AT) for every child with an IEP. If the team determines AT is required for the child to receive FAPE, the school district must provide it at no cost, including for use at home if necessary. This can include AAC devices, screen readers, hearing aids, motorized wheelchairs for school navigation, and more.

Who it protects

Children ages 3–21 (Part B) or birth to 3 (Part C) who have one or more of 13 disability categories: specific learning disability, speech or language impairment, other health impairment, autism, emotional disturbance, intellectual disability, hearing impairment, orthopedic impairment, visual impairment, multiple disabilities, deaf-blindness, traumatic brain injury, and developmental delay (for ages 3–9 at state discretion).

Who must comply

All public school districts and publicly funded charter schools that receive federal IDEA funding. Private schools are not directly covered, but students placed there by public schools retain their IDEA rights.

What it does NOT cover (common misunderstandings)

IDEA does not require the school to maximize the child's potential or provide the best possible education — the standard is "appropriate" progress. Families who want more than what the school offers may need to advocate, go through due process, or pursue private services.

IDEA does not cover adults. Once a student ages out (usually at 22), IDEA rights end. The ADA and Section 504 continue to apply in higher education and employment.

Eligibility under IDEA requires both a qualifying disability category AND a demonstrated need for special education services. A child can have a disability and not qualify for IDEA if they do not need specially designed instruction.

How to enforce your rights

• Request an IEP meeting in writing at any time if you believe the child's needs have changed.
• Request an Independent Educational Evaluation (IEE) at public expense if you disagree with the school's evaluation.
• File a state complaint with your state education agency for procedural violations.
• Request mediation (voluntary, free) or due process (a formal hearing before an impartial hearing officer) for substantive disagreements.
• File a complaint with the US Department of Education Office of Special Education Programs (OSEP).

Recent updates

The most recent reauthorization was the Individuals with Disabilities Education Improvement Act of 2004, which aligned IDEA with No Child Left Behind and introduced changes to evaluation procedures and discipline provisions. There have been subsequent regulations and Dear Colleague Letters from the Department of Education clarifying expectations around IEPs, LRE, and AT consideration. In 2017, the Supreme Court in Endrew F. v. Douglas County School District raised the standard for "appropriate" progress, requiring more than merely de minimis progress.