If you’re moving to Long Island with kids in tow, or planning to start a family here, the school district conversation is going to happen fast. Like, before you’ve even decided which county you want to live in. That’s not an accident. Long Island parents take public education seriously, real estate agents know it, and the housing market reflects it in ways that will make your eyebrows shoot up.

The good news: Long Island legitimately has some of the best public schools in the entire country. This isn’t regional pride talking. The data backs it up year after year. In Niche’s 2026 Best School Districts rankings, 12 Long Island districts landed among the nation’s top 100, with Syosset claiming No. 2 nationwide and Roslyn jumping 12 places to claim No. 3. That kind of performance doesn’t happen by accident.

This guide breaks down the top districts in Nassau and Suffolk counties, explains how rankings actually work and what they miss, and helps you figure out which district fits your family, not just which one looks best in a spreadsheet.

How Long Island School Districts Are Ranked

Before you put too much stock in any ranking, it helps to know who’s doing the ranking and what they’re actually measuring.

The main sources families rely on are Niche, U.S. News & World Report, GreatSchools, and New York State’s own education department report cards. Each one weighs factors a little differently, which is why a district can rank No. 5 on one list and No. 15 on another. That’s not a flaw in the system so much as a reminder that “best” depends on what you care about.

Generally speaking, the major factors across all these sources include state test scores and academic proficiency, graduation rates, college readiness, AP course participation and pass rates, teacher quality and licensing, student-to-teacher ratios, and parent and student reviews.

Niche in particular leans heavily on community reviews alongside hard data, which is why a district with slightly lower test scores can still rank high if parents and students love the environment. Niche removed SAT/ACT scores from its 2026 methodology to reflect a broader shift away from standardized testing in college admissions.

One important caveat worth saying out loud: rankings are a starting point, not a verdict. A district ranked No. 8 instead of No. 3 might be a dramatically better fit for your kid depending on class size, special education services, arts programs, sports culture, or the simple vibe of the community. Use the rankings to build a list, then do the real digging from there.

Best School Districts in Nassau County

Nassau County is the undisputed heavyweight of Long Island public education. Eleven of New York State’s top 20 school districts are located in Nassau, and the county claims 18 districts in the state’s top 50, more than any other county in New York. For families where schools are the primary driver of the relocation decision, Nassau is where most conversations start.

Syosset Central School District

Niche 2026 national rank: No. 2 | New York State rank: No. 1

Syosset is the crown jewel of Long Island public education right now, and it’s not really close. In the 2026 Niche rankings, Syosset Central School District was ranked the No. 1 school district in New York State and No. 2 in the entire United States. For a public school district, that’s a staggering achievement.

What makes Syosset tick goes deeper than test scores. The district runs an accelerated academic calendar where Regents Exams in Algebra 1 and Earth Science are administered in 8th grade rather than 9th, giving students more runway to load up on AP and advanced coursework in high school. Roughly 95% of students take Algebra 1 by 8th grade.

The arts program is also genuinely exceptional. The Syosset High School Chamber Orchestra was crowned National Grand Champions, and the district regularly places students in NYSSMA All-State programs and national science competitions. Three Syosset seniors were named 2026 Regeneron Science Talent Scholars, which is one of the most prestigious pre-college science recognitions in the country.

Syosset’s mandatory foreign language program starts in kindergarten with Russian and moves through Chinese, Italian, Spanish, French, and Latin through elementary school, with middle school students choosing from Spanish, Italian, French, Chinese, or Korean. For a public school, that’s a language curriculum that rivals many private institutions.

The district serves approximately 7,000 students across 10 schools, covering Syosset, Woodbury, and parts of Plainview and Jericho.

Roslyn Union Free School District

Niche 2026 national rank: No. 3 | New York State rank: No. 2

Roslyn’s jump from No. 15 to No. 3 nationally is one of the most significant moves in this year’s rankings, and it signals a district that’s been quietly building momentum. Roslyn is third-highest ranked in the country according to Niche’s 2026 report, with 21 Roslyn High School seniors named Commended Students in the 2026 National Merit Scholarship Program.

The district excels in humanities alongside a growing STEM focus. Roslyn offers 26 AP courses including European History and Italian, features a research program for science-inclined students, and has strong community support and leadership development programs.

Roslyn is a smaller district than Syosset, which translates to a more intimate academic environment. For families who want elite academic outcomes without the scale of a larger district, Roslyn hits a sweet spot.

Jericho Union Free School District

Niche 2026 national rank: No. 10 | New York State rank: No. 4

Jericho is where Long Island families go when they want the most rigorous academic environment possible, full stop. The district posted a 98% graduation rate, spends $35,921 per student annually, and carries an A+ overall Niche grade with an A+ in teacher quality.

Jericho boasts 95% AP participation, a strong STEM and research track, signature programs in research design and leadership, and offers five or more world languages along with diverse electives ranging from coding to business. The academic culture here is intense in the best possible sense. Students who thrive on challenge tend to thrive in Jericho.

The district serves about 3,242 students, which keeps it tight-knit despite its national profile. One honest note: Jericho’s lowest Niche grade is a B- in diversity, which is a factor worth considering depending on your family’s priorities.

Great Neck Public Schools

Niche 2026 national rank: No. 20 | New York State rank: No. 5

Great Neck is one of Long Island’s most storied school systems, with a reputation for excellence that goes back decades. The district earned an A+ overall Niche grade with an A+ in teacher quality, a 95% graduation rate, and spends $33,676 per student across its 6,841 students.

Great Neck runs two high schools, North and South, each with its own identity while sharing the district’s broader academic infrastructure. The district has historically been known for strong programs in STEM, the arts, and college preparation, with a diverse student population that reflects the cultural richness of the Great Neck community. The proximity to New York City, a 30-35 minute LIRR ride, makes it a top pick for commuter families who don’t want to sacrifice school quality for location.

Manhasset Union Free School District

Niche 2026 national rank: No. 21 | New York State rank: No. 6

Manhasset is a smaller district, about 3,038 students, that delivers big on academic outcomes. Niche gives it an A+ overall grade with an A+ in teacher quality and a 97% graduation rate.

Manhasset combines rigorous STEM education with strong athletic tradition, making it one of the more well-rounded districts on Long Island. The high school runs a genuine extracurricular culture alongside its academics, which matters for families who don’t want their kids spending every evening on AP homework.

The community is tight-knit and involved in school affairs in a way that shows up in student outcomes. Manhasset is the kind of district where the PTA actually does things, and the school budget votes draw real turnout.

Other Notable Nassau Districts

Nassau’s depth is remarkable. Beyond the top five, several other districts routinely crack state and national top lists:

East Williston was Long Island’s highest-ranked district in 2025 before slipping to No. 26 nationally in 2026. It remains one of the state’s best, with a small-district feel and exceptional academics. Herricks and Hewlett-Woodmere both land in state top 50 territory. Garden City posted a 100% graduation rate and a strong college readiness score in U.S. News rankings. Bethpage made one of the biggest moves in the 2026 rankings, jumping from No. 52 to No. 29 nationally, reflecting strong gains in academics and parent and student satisfaction.

Best School Districts in Suffolk County

Suffolk County covers a lot of ground, both geographically and in terms of school quality. The top Suffolk districts are genuinely world-class. Suffolk County claimed eight spots among the state’s top 50 school districts in Niche’s 2026 rankings, giving Long Island a combined 26 districts in the state’s top 50. The county’s best districts compete nationally, even if Nassau gets most of the headlines.

Half Hollow Hills Central School District

Niche 2026 national rank: No. 9 | New York State rank: No. 3 | Suffolk County rank: No. 1

Half Hollow Hills is Suffolk County’s standard-bearer, and it shows up in every major ranking. Niche ranks Half Hollow Hills No. 1 in Suffolk County, No. 3 in New York State, and No. 9 out of more than 10,000 districts nationwide.

The district serves 7,248 students across nine schools in Dix Hills and earned an A+ overall Niche grade, with students and parents specifically praising the supportive teachers and strong academic programs. Both Half Hollow Hills high schools, Hills West and Hills East, rank among the top 10 high schools in New York State, with Hills West holding the title of highest-ranked Long Island high school in Niche’s study.

For Suffolk families who want Nassau-level outcomes without the Nassau price tag, Half Hollow Hills is the answer to that question. Dix Hills is not cheap, but it’s meaningfully more affordable than Syosset or Jericho on the Nassau side.

Three Village Central School District

Niche 2026 New York State rank: No. 16 | Suffolk County rank: No. 2

Three Village covers the Stony Brook and East Setauket area on the North Shore of Suffolk, and it brings a distinct academic culture shaped in part by its proximity to Stony Brook University. The district serves 5,686 students across eight schools and earned recognition for unique programs including an excellent jazz program, marching band, Science Olympiad team, and the INSTAR Program.

Three Village posted a 98% graduation rate and spends $36,170 per student annually, giving it the highest per-student spending among Suffolk’s top districts. The academic culture feels collaborative rather than cutthroat, which is a meaningful distinction for families who want rigor without the pressure-cooker environment some top districts develop.

Ward Melville High School is the flagship of the district and consistently ranks among Suffolk’s top high schools.

Cold Spring Harbor Central School District

Suffolk County rank: No. 3

Cold Spring Harbor is a small district in a beautiful setting, and its size is part of the appeal. The district serves only 1,525 students across four schools with a student-to-teacher ratio of 11:1, and its average testing rank is in the top 5% of all public schools in New York State.

Math proficiency at Cold Spring Harbor runs at 87% (versus the New York State average of 52%), and reading proficiency sits at 81% (versus a 49% statewide average). Those are not just good numbers for Suffolk County. Those are good numbers by any measure, anywhere in the country.

Lloyd Harbor School, part of the Cold Spring Harbor district, is Suffolk County’s highest-ranked public elementary school according to U.S. News, with an 89% math proficiency rate. For families with younger kids, that elementary-level strength is a big deal.

The trade-off with Cold Spring Harbor is that it’s a small district with limited extracurricular breadth compared to a place like Half Hollow Hills. What you give up in variety, you gain in attention and intimacy.

South Huntington Union Free School District

South Huntington has been one of Suffolk’s more quietly impressive performers in recent years. Walt Whitman High School, the district’s flagship, earned an overall Niche grade of A, and the district has been recognized for programs that serve a more diverse student population than many of its higher-profile Suffolk neighbors. For families who prioritize both academic quality and a more representative student community, South Huntington is worth a close look.

Other Notable Suffolk Districts

Harborfields in Greenlawn ranked fourth among Suffolk districts in Niche’s 2026 report and consistently earns strong marks for its close-knit community and academic quality. Commack is one of Suffolk’s larger strong performers with a well-regarded high school and a broad extracurricular program. Smithtown Central offers solid academics across a large district footprint. Kings Park has been climbing in recent state rankings with strong elementary proficiency scores.

Nassau County vs. Suffolk County: Key Differences for Families

This question comes up constantly, and the honest answer is that it depends on what you’re optimizing for.

Academic rankings: Nassau County has more top-ranked districts and higher density of elite schools at the very top of the list. If your primary goal is to land in a top-10 national district, Nassau gives you more options. That said, Half Hollow Hills and Three Village in Suffolk are genuine national competitors, not consolation prizes.

Class sizes and programs: Both counties offer strong AP and extracurricular programs at the top districts. Nassau’s higher concentration of affluent communities tends to translate into more resources per school in many cases, though Suffolk’s top districts spend competitively per student.

Cost of living and property taxes: This is where Suffolk wins clearly. Housing prices in top Nassau districts like Syosset, Jericho, and Manhasset regularly run $900,000 to $1.5 million and up. Property taxes in those same areas often hit $18,000 to $25,000 a year. Suffolk’s top districts, particularly Half Hollow Hills in Dix Hills, offer comparable academic quality at meaningfully lower price points, with median home prices more often in the $650,000 to $950,000 range and somewhat lower tax bills.

Commute and lifestyle: Nassau is denser, more suburban in the classic sense, and closer to New York City. Suffolk offers more space, larger lots, and a slightly slower pace. If daily LIRR commuting is part of your life, Nassau generally keeps those commute times shorter.

How School Districts Affect Home Prices on Long Island

The relationship between school district quality and home values on Long Island is direct, documented, and not subtle. Real estate agents on the Island talk about it openly, and buyers who don’t account for it often end up confused when two houses that look identical on paper are priced $200,000 apart.

The basic dynamic: families competing to buy into a top district drive up prices within that district’s attendance boundary. Because New York State ties public school access to your home address, every family buying in the attendance zone of a school they want is also competing with every other family who wants the same thing.

The best illustration of this is the school district line itself. In some Nassau County towns, crossing a district boundary by a few blocks can mean a $150,000 to $300,000 difference in home prices for otherwise comparable properties. That premium is real and persistent because the demand driving it is real and persistent.

Property taxes compound this. The top-performing districts tend to spend more per student, which means higher school budgets, which means higher property taxes for homeowners in those districts. Nassau County homeowners in elite districts often pay $18,000 to $25,000 in annual property taxes. You’re paying for what you’re getting, but it’s a real number that needs to factor into your monthly budget math.

A few practical tips for navigating this:

• Verify the attendance boundary before you make an offer. District maps can be confusing and occasionally counterintuitive. One block in the wrong direction can put you in a completely different district.
• Look at neighboring districts. In some cases, a district ranked 8th instead of 2nd offers 90% of the academic quality at 70% of the home price.
• Factor property taxes into your total monthly cost. A home that seems affordable on mortgage alone can become very uncomfortable once you add $20,000 a year in taxes.
• Consider the full range of years you’ll be in the district. If you have a newborn, you’re potentially looking at 18 years of school district relevance. The long time horizon makes the premium easier to justify.

How to Choose the Right Long Island School District for Your Family

Rankings tell you which districts are academically strong. They don’t tell you which district is right for your kid, and those are genuinely different questions.

Start with your priorities. Does your child thrive in a highly competitive academic environment, or do they need more space to develop at their own pace? Are sports or arts programs a significant factor? Does your family prioritize a diverse student population? Is special education programming important? Different districts excel in different areas, and none of this shows up cleanly in a Niche ranking.

Use multiple research tools. Niche and GreatSchools are good starting points. The New York State Education Department’s school report cards go deeper on test score data broken down by subject and grade level. U.S. News high school rankings emphasize college readiness specifically, which matters if that’s your primary concern.

Visit in person. School tour days, open houses, and board meetings are publicly accessible and genuinely revealing. The feel of a building, the energy of the hallways between classes, the way a principal talks about the school’s culture, these things tell you things that no database captures.

Talk to parents already in the district. Local Facebook groups, community forums, and even a conversation at the park can surface real information about day-to-day experience that rankings don’t reflect. Parents who are happy tend to say why. Parents who aren’t happy tend to say that too.

Verify zoning before you fall in love with a house. Seriously. Call the district office directly with a specific address to confirm the attendance zone before you make an offer. Real estate listings sometimes get this wrong, and the consequences of finding out after closing are not fun.

Work with a local real estate agent who knows the district lines. Long Island’s 120-plus school districts with their patchwork attendance boundaries are legitimately confusing. A good local agent knows where the lines are and can save you from expensive surprises.

Frequently Asked Questions

What is the number one school district on Long Island? Syosset Central School District holds the top spot on Long Island and in New York State for 2026, ranking No. 2 nationally according to Niche.

Which Long Island districts rank in the national top 10? Syosset at No. 2, Roslyn at No. 3, and Half Hollow Hills at No. 9 all placed in the national top 10 in Niche’s 2026 rankings. Jericho came in at No. 10.

Is Nassau or Suffolk better for schools? Nassau has more top-ranked districts at the very highest levels, but Suffolk’s leading districts, particularly Half Hollow Hills and Three Village, are nationally competitive. Nassau generally costs more to buy into. The right answer depends on your budget and specific priorities.

What is the best school district in Suffolk County? Half Hollow Hills Central School District in Dix Hills, ranked No. 9 nationally and No. 3 in New York State for 2026.

How are Long Island schools funded? New York public schools are funded through a combination of local property taxes, state aid, and some federal funding. On Long Island, local property taxes carry a heavy share of the load, which is why property taxes in high-performing districts tend to be substantial. Better-funded districts generally have more resources, smaller classes, and more program options, which is part of why school district quality and property taxes track together so closely here.

Do better school districts always mean higher home prices? Almost always, yes, particularly on Long Island. The relationship is strong and consistent. That said, there are cases where a less-publicized but still excellent district offers relative value compared to its more famous neighbors. Finding those pockets is one of the reasons working with a knowledgeable local agent matters.

Long Island’s public school system is genuinely one of the strongest arguments for moving here. The data isn’t cherry-picked, it’s consistent across multiple independent sources year after year. Twelve districts in the national top 100, four in the national top 10, and the No. 2 district in the entire country: that’s a track record.

The challenge isn’t finding a good district. It’s sorting through 120-plus of them, understanding what the rankings capture and what they miss, and matching the right school environment to your specific kid and family. Do that work carefully, verify the attendance boundary twice, and you’ll find that Long Island delivers on its education reputation in ways that are hard to match anywhere in the country.