Largest School Districts in the United States

Line up every public school student in the United States and you would have a crowd bigger than the population of South Korea. Roughly 49.5 million children attend the country's public schools, and somebody has to organize them. That job falls to more than 13,000 school districts, and a handful of them are so enormous they function like small governments, running hundreds of buildings, employing tens of thousands of teachers, and busing more people around each morning than many cities hold. These are the ten largest, based on the most recent complete federal enrollment count from the National Center for Education Statistics.

10 Largest School Districts in the US

A quick note before the countdown: enrollment figures shift every year, and districts count on slightly different calendars, so rankings this close together (Chicago and Miami-Dade have been trading places, as have Houston and Palm Beach) can flip depending on which year's data you use. The figures above are the latest complete federal set. Now, the districts themselves.

New York City Public Schools - New York

Nothing else in American education is close to this. With around 845,000 students, New York City's school system is larger than the next two districts combined, and it alone educates almost one in every sixty public school students in the entire country. Spread across roughly 1,600 schools in five boroughs, it runs a fleet of yellow buses and a bureaucracy big enough that it would rank as a mid-sized city on its own.

The scale comes with staggering diversity: around 90% of students are people of color, more than 40% speak a language other than English at home, and over a hundred languages echo through the hallways on any given day. Enrollment has been sliding, though, down from a pandemic-era peak, as families leave the city and birth rates fall, a slow-motion challenge for a system built to hold a million kids.

Los Angeles Unified School District - California

Los Angeles Unified is the giant of the West, with roughly 420,000 students, and it covers a footprint that would swallow whole states back east: more than 700 square miles stretching well beyond the city of Los Angeles itself into dozens of surrounding communities. It is the largest school system in California and, like New York, overwhelmingly diverse, with students of color making up close to 90% of enrollment.

The district has spent years wrestling with declining enrollment as California's population growth stalls and housing costs push families out. Its response has leaned hard into scale of a different kind, running one of the country's most ambitious school-meal programs and pouring resources into technology and community schools, betting that a shrinking district can still be a better one.

Miami-Dade County Public Schools - Florida

Here is where the rankings get interesting. Miami-Dade, with roughly 335,000 students, has quietly climbed past Chicago into third place nationally, a swap driven less by Miami booming than by Chicago shrinking. It is the largest district in the Southeast and one of the most international school systems anywhere in the country.

Roughly three-quarters of its students are Hispanic or Latino, and about one in four is still learning English. Beyond English and Spanish, the languages spoken most often at home include Haitian Creole, Portuguese, and French, a reflection of Miami's role as a gateway between the United States, the Caribbean, and Latin America. The district leans into it, running dual-language and international-studies programs that treat that mix as an asset rather than a hurdle.

Chicago Public Schools - Illinois

Founded in 1837, Chicago Public Schools is one of the oldest big-city systems in the country, and now the fourth largest, with around 323,000 students. Its story over the past two decades is the mirror image of the Sun Belt districts on this list: as the city's population has drifted downward, so has enrollment, slipping from well over 400,000 at the turn of the century.

What Chicago lacks in growth it makes up in structural complexity. The district runs a vast mix of traditional neighborhood schools, selective-enrollment magnet schools that are among the best public high schools in the nation, and roughly 100 charter schools, all under one enormous budget that regularly tops $10 billion. More than half its students come from economically disadvantaged families, and the district has long been a national flashpoint for debates over school funding, closures, and teacher strikes.

Clark County School District - Nevada

Here is a trivia answer worth keeping: the fifth-largest school district in America is not in New York, California, or Texas, but in the Nevada desert. Clark County School District covers Las Vegas, Henderson, North Las Vegas, and Boulder City with roughly 300,000 students, which means the people who serve you a cocktail on the Strip are sending their kids to one of the biggest school systems in the country.

Because it is essentially a single countywide district covering a fast-grown metro, Clark County has stayed more stable than the shrinking coastal giants. Nearly half its students are Hispanic or Latino, and about a fifth are English language learners. Its sheer size in a state with a thin tax base has also made it a long-running case study in the strain that rapid growth puts on staffing and school construction.

Broward County Public Schools - Florida

Broward County, anchored by Fort Lauderdale in Florida, is the sixth-largest district with about 247,000 students, and the second of five Florida counties on this list, a striking testament to how the state runs its schools as huge countywide systems rather than dozens of small city ones.

Broward posts one of the higher graduation rates among the giant districts, and it runs an extensive network of magnet programs and roughly 90 charter schools. It is also a district that has carried more than its share of national weight, having become, after the 2018 tragedy at Marjory Stoneman Douglas High School in Parkland, a central place in the country's conversation about school safety.

Hillsborough County Public Schools - Florida

Headquartered in Tampa, Hillsborough County is the seventh-largest district nationally with roughly 226,000 students, and it has a rare distinction on this list: it is actually growing. While the coastal megadistricts shed students, Tampa Bay's steady influx of new residents has pushed Hillsborough's enrollment up, one of the few big systems bucking the national downward trend.

It is also remarkably polyglot for a district outside the traditional gateway cities. Students across Hillsborough collectively speak something on the order of 190 languages, a diversity that reflects how thoroughly the Tampa Bay region has globalized over the past generation.

Orange County Public Schools - Florida

Built around Orlando, Orange County Public Schools is the eighth-largest district with around 204,000 students, educating the children of the workforce that keeps the world's busiest cluster of theme parks running. The district's population is split roughly evenly among Hispanic, white, and Black students, one of the more balanced demographic mixes among the giants.

Orange County was also an early mover on classroom technology. Its one-to-one digital learning program put a device in the hands of essentially every student well before the pandemic made that standard, which left the district better positioned than most when schools abruptly went remote in 2020.

Houston Independent School District - Texas

Houston is the most turbulent story on this list. The largest district in Texas, with roughly 184,000 students, it has been run since June 2023 not by an elected school board but by a board of managers appointed by the state, after the Texas Education Agency took the district over. The trigger was narrow, a single high school's long run of failing accountability ratings, but the intervention reshaped the entire system, and in 2025 the state extended its control through at least 2027.

The takeover has become one of the most closely watched experiments in American public education. State officials point to sharp gains in test scores and a collapse in the number of low-rated campuses as proof the intervention is working, with the education commissioner calling it the largest academic improvement at this scale in the country. Critics, including many Houston parents and teachers, counter that the appointed leadership has driven scripted lessons, school closures, and an accelerating exodus of students and staff. Both things appear to be true at once, which is exactly why the rest of the country is watching. The district serves a student body that is more than 60% Hispanic or Latino, and its students speak roughly 100 languages.

Palm Beach County School District - Florida

Rounding out the top ten is Palm Beach County, the fifth and final Florida district on the list, with roughly 188,000 students. That five of the ten largest districts in the country sit in a single state is the real headline here: Florida's decision to organize public education around large countywide systems has quietly made it the most concentrated big-district state in America.

Palm Beach has leaned into language and technology in equal measure, running dozens of dual-language programs and handing out well over 100,000 laptops to students. It also maintains a strong slate of career and technical education programs, the kind of workforce-focused training that has come back into fashion as districts rethink what a high school diploma should prepare a student to do.

What the Rankings Reveal

Step back from the individual districts and a clear map of the country emerges. The old urban giants of the Northeast and Midwest, New York and Chicago, are slowly shrinking as families and birth rates decline. The Sun Belt tells a steadier or growing story, which is why Florida claims half the list and Nevada and Texas hold their own. And the entire national picture is being reshaped underneath by two forces the draft-era numbers barely hint at: the steady rise of charter schools, and, in Houston's case, an unprecedented experiment in who gets to run a giant district at all. The names at the top have barely changed in decades. What is happening inside them is changing fast.

The 50 Largest School Districts in the US

The full ranking below lists the fifty largest districts by enrollment. Figures are drawn from National Center for Education Statistics data; the top districts reflect the latest complete federal count, and positions near the margins shift slightly year over year.