children in American
special education.
Ages three to twenty-one, in every state, drawn one dot at a time. One in seven is autistic: the dots that glow gold. From before they start school to the day they leave, this is what the federal data records: who they are, where they learn, how they are disciplined, how they are doing, and how they exit.
Source: U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25. National totals include the 50 states, DC, and the additional reporting entities.
It starts before kindergarten.
Before the eight million reach a classroom, early intervention under Part C is already at work with the very youngest, infants and toddlers from birth to age 2.
infants and toddlers, birth to age 2, were in early intervention in 2024–25, before they ever set foot in a classroom. Each dot is about 1,000 of them.
Source: U.S. Department of Education, OSEP, "IDEA Part C Child Count and Settings Collection," 2024–25. National total includes the 50 states, DC, and the additional reporting entities.
How many students does special education serve?
Under IDEA Part B, U.S. public schools served over eight million students with disabilities in 2024–25, ages three to twenty-one, the number that just counted up above. Switch the view to see who they are.
Hover or tap a dot for its group. The legend below carries each group's name and share.
Source: U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25 (US, Outlying Areas & Freely Associated States row); public-school enrollment context from NCES, Digest of Education Statistics.
Autism's share has grown nearly tenfold since 2000.
From 1.5% of students with disabilities in 2000–01 to about 1 in 7 (14.9%) today.
Twenty-four years in one hundred students
Every dot is 1 of 100 students with disabilities; the gold dots are autistic. Each frame is one school year, 2000–01 through 2024–25, following the real child-count share, so the tide rises the way the data actually did. Autism climbs from about 1 in 67 to about 1 in 7, a nearly tenfold rise. Sources: NCES Digest of Education Statistics 2023, table 204.30, and the U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection" (2023–24 and 2024–25), for the 50 states and DC.
So what is causing the rise?
No single cause. Researchers point to broader diagnostic criteria, earlier screening, and less stigma, plus diagnostic substitution: some students once counted as intellectual disability or learning disability are now identified as autistic. As autism climbed, both of those categories fell.
As autism climbs, two categories fall
Each dot is 1 in 100 students with disabilities. As autism rose, learning disability and intellectual disability fell, the fading dots. The two categories autism most overlaps with are the two that shrank, the signature of changing identification. Sources: NCES Digest of Education Statistics 2023, table 204.30, and the U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25, for the 50 states and DC.
Source: U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25.
Is every disability included equally?
Federal law favors the "least restrictive environment," and across all disabilities more than two-thirds are included for most of the day. But not every category, not remotely. Pick one, or press play to walk from the most included to the least. Each dot is 1% of that category's students, drawn as a face: a smile is a child in a general classroom most of the day, a flat face is split time, a frown is a child taught mostly apart. Watch where autism lands.
Source: U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25. "Mostly included" = 80% or more of the day in a regular class. National totals include the 50 states, DC, and the additional reporting entities.
Does inclusion depend on where you live?
Across all disabilities, the share mostly included runs from about 45% to 82% by state. Select any state to read its story, and switch the category to compare any disability. Each category is shaded on its own scale.
Source: U.S. Department of Education, OSEP, "IDEA Part B Child Count and Educational Environments Collection," 2024–25. Ranks cover the 50 states and DC; suppressed cells are shown un-shaded, not as zero.
How often are students removed from class?
In 2023–24, schools logged more than two million disciplinary removals of students with disabilities. Here is the pace, and how it is distributed.
Source: U.S. Department of Education, OSEP, "IDEA Part B Discipline Collection," 2023–24 (about 2.24 million disciplinary removals of students with disabilities).
Removals reach students with disabilities at higher rates.
Students with disabilities are over-represented at every level of school discipline, and it starts before kindergarten. Each of these 100 faces is a child who was punished. The frowns are students with disabilities; the glowing ones show how far past their fair share they land.
Source: U.S. Department of Education, Office for Civil Rights, "Civil Rights Data Collection," 2021–22. Preschoolers with disabilities were 23% of public preschool enrollment but 74% of the preschoolers expelled (275 of 370 reported nationwide).
And it lands far harder on some categories than others.
Disciplinary removals per 100 students, by disability (2023–24). Students with emotional disturbance are removed nearly ten times as often as autistic students, more than once per student, on average.
Autistic students are removed below the all-disability rate, but that was still 141,126 removals in 2023–24. Source: U.S. Department of Education, OSEP, "IDEA Part B Discipline Collection," 2023–24; rate = removals per 100 students.
Are they learning at grade level?
On the same statewide tests their classmates take, students with an IEP reach grade level at less than a third the rate. The gap holds from fourth grade through high school.
Each lit icon is one student in 100 working at grade level; a book for reading, a plus for math. Just 22 of the 46 reporting states met their reading-gap target, and 18 met their math target. Source: U.S. Department of Education, OSEP, "IDEA Part B SPP/APR" Indicator 3 (grade-level proficiency, students with IEPs compared with all students, averaged across the tested grades), FFY 2023 (2025 submission); 46 states reporting.
Most states fall short of the federal mark.
Every year the U.S. Department of Education rates each state on how well it carries out IDEA, once for Part B and once for Part C. Most states fell short in at least one.
Each face is one of 100; a frown got "Needs Assistance" or "Needs Intervention" in Part B or Part C, a smile met requirements in both. Source: U.S. Department of Education, OSEP, IDEA Part B and Part C State Determinations, 2026 (based on FFY 2024). Covers the 50 states, DC, and the additional reporting entities.
What does the country spend?
Each year the federal government sends states a share of the cost of special education under IDEA Part B. In 2021–22 that came to about fourteen billion dollars, nearly all of it grants for school-age students (Section 611) and a much smaller amount for preschoolers (Section 619). Every coin below stands for roughly $143 million.
Each lit coin is about $143 million of the roughly $14.3 billion the U.S. Department of Education allocated under IDEA Part B: $13.8 billion in Section 611 grants for school-age students and $497 million in Section 619 grants for preschoolers. Federal dollars cover only a share of the cost; states and school districts pay most of the bill. Source: U.S. Department of Education, OSEP, "IDEA Part B Maintenance of Effort Reduction and Coordinated Early Intervening Services (MOE and CEIS) Collection," 2021–22 (FFY 2021 allocations, which include one-time American Rescue Plan relief funds). Sections 611 and 619 combined; national total includes the additional reporting entities.
Where does the journey end?
About 471,000 students ages 14 to 21 leave special education each year. Watch them pour into how they exit, each a tiny face; switch categories to see the funnel change shape.
All disabilities: 77.6% graduate with a regular diploma, 8.7% leave with a certificate, 12.7% drop out, and 1.0% age out or leave another way. Source: U.S. Department of Education, OSEP, "IDEA Part B Exiting Collection," 2023–24 (SEA level, ages 14–21); national totals include the additional reporting entities.
Every dot is one child, and one promise the country wrote into law: a free, appropriate public education.
The data on this page is how we see whether it is kept.
How to read these numbers honestly.
This story draws on several federal collections, each with its own scope and year. Every figure is a count of children that states reported, not a count of diagnoses, and suppressed cells are shown as missing, never as zero.
Sources: U.S. Department of Education, OSEP: “IDEA Part B and Part C Child Count and Educational Environments” (2024–25); “IDEA Part B SPP/APR” Indicator 3, FFY 2023 (2025 submission), and the 2026 State Determinations (based on FFY 2024); “IDEA Part B Discipline Collection” and “IDEA Part B Exiting Collection” (2023–24), via the EDFacts Data Warehouse; and the Office for Civil Rights “Civil Rights Data Collection” (2021–22) for preschool expulsion. National figures include the 50 states, DC, and the additional reporting entities where the source file provides them; per-state maps and rankings cover the 50 states and DC. Category trends and public-enrollment context: NCES, Digest of Education Statistics 2023 and Condition of Education.