Best High Schools in Gwinnett County, Georgia
Introduction
Gwinnett County has long been one of Georgia's most dynamic and fast-growing regions, and its schools reflect that energy. Stretching from the suburban corridors of Lawrenceville to the newer developments pushing north toward Hoschton and Sugar Hill, Gwinnett offers families an unusually wide range of strong public high school options — many of which rank well above state and national averages.
What makes this list particularly interesting is the variety. You'll find a small-city school that punches far above its weight, a brand-new STEM-focused campus already making a name for itself, and several large comprehensive high schools that have quietly built reputations for academic excellence over decades. Whether you're relocating to the area or simply trying to decide between neighborhoods, here's a closer look at the ten best high schools Gwinnett County has to offer.
1. Buford High School — Buford City Schools, Buford
Buford High School sits at the top of this list and honestly isn't very close to being caught. Scoring in the 96th percentile in Math, 95th in Science, and 92nd in English, it earns an overall 95th percentile ranking — putting it among the strongest high schools in the entire state of Georgia. What sets Buford apart is that it operates under the Buford City School System, a small, tight-knit district that functions almost like a private school in terms of community investment and consistency of leadership. Families who prioritize academic rigor alongside a strong sense of school identity tend to thrive here, and the school's athletics program only adds to its well-rounded appeal.
2. North Gwinnett High School — Gwinnett County Schools, Suwanee
North Gwinnett is the clear leader among Gwinnett County's own public schools, posting an overall 94th percentile ranking with a standout 96th percentile in English — the highest English score on this entire list. Math comes in at the 87th percentile and Science at the 94th, making this a genuinely well-rounded academic program. Located in Suwanee, one of the county's more established and family-oriented communities, North Gwinnett draws households that are deeply engaged in their kids' education and expect both strong classroom instruction and a full slate of extracurricular opportunities. It's consistently one of the first schools that comes up when families ask where the academic bar is highest within the county system.
3. Mill Creek High School — Gwinnett County Schools, Hoschton
Mill Creek rounds out the top three with an overall 89th percentile ranking, including an 91st percentile in Science and solid scores in English (89th) and Math (83rd). Located in Hoschton near the northern edge of the county, Mill Creek has grown alongside the residential boom in that part of Gwinnett — and the school has kept pace academically, not just in enrollment. It tends to attract families settling into newer subdivisions who want the amenities of a large high school without sacrificing academic quality. The campus is modern, the programs are broad, and the school's trajectory has been consistently upward.
4. Brookwood High School — Gwinnett County Schools, Snellville
Brookwood has been one of Gwinnett's flagship high schools for years, and it holds that reputation with an overall 87th percentile ranking, including a 90th percentile in Science and 87th in English. Situated in Snellville in the western part of the county, Brookwood serves a large and diverse student body and still manages to maintain strong academic outcomes — which is no small feat. Families in this part of Gwinnett tend to have deep roots in the community, and Brookwood reflects that stability. It's a school with real tradition behind it, and the academics back up the name recognition.
5. Parkview High School — Gwinnett County Schools, Lilburn
Parkview is one of the more interesting schools on this list because its academic profile has a distinctive shape: a 90th percentile in Math is its highest subject score, but its overall 86th percentile reflects a school that is genuinely strong across the board. Located in Lilburn, Parkview draws from one of the more diverse zip codes in the county and has built a culture that balances competitive academics with a welcoming environment. Families who value a large, well-resourced school with particularly strong quantitative programs will find a lot to like here. It ties with Seckinger at the overall level, but Parkview's math performance is what makes it stand out in this range.
6. Seckinger High School — Gwinnett County Schools, Buford
Seckinger is arguably the most intriguing school on this list simply because of how new it is. Opened in recent years as one of Gwinnett County's newest high schools, Seckinger has already climbed to an overall 86th percentile ranking, with scores of 88th in Science, 86th in Math, and 83rd in English. That kind of early performance from a school still building its identity and culture is genuinely impressive. Located in Buford, it draws families from some of the county's newer and faster-growing neighborhoods, and there's a real sense of momentum around the campus. If trajectory matters to you as much as current standing, Seckinger is worth watching closely.
7. Paul Duke STEM High School — Gwinnett County Schools, Norcross
Paul Duke is Gwinnett County's dedicated STEM magnet high school, and it brings something genuinely different to this list. With an overall 84th percentile ranking and matching scores of 84th in both English and Science, the school's profile reflects a focused, project-based academic environment that isn't quite like a traditional comprehensive high school. Math comes in at the 79th percentile, which might seem surprising for a STEM school, but the curriculum here is less about test preparation and more about applied problem-solving and innovation. Families who have students with a real passion for science, technology, engineering, or math — and who thrive in a more hands-on, collaborative setting — often find Paul Duke to be exactly the right fit.
8. Grayson High School — Gwinnett County Schools, Loganville
Grayson High School serves the southeastern corner of Gwinnett County and earns an overall 81st percentile ranking, with consistent scores across English (81st), Math (78th), and Science (79th). That consistency is actually one of Grayson's quiet strengths — this isn't a school that excels dramatically in one area while lagging in another. Families in the Loganville area tend to appreciate a school that offers stability, strong athletics, and a connected community feel. Grayson is a large school that manages to retain a sense of local identity, and for families planting roots in that part of the county, it delivers solid academics alongside everything else a big high school brings.
9. Archer High School — Gwinnett County Schools, Lawrenceville
Archer comes in at an overall 78th percentile, with its strongest performance in English (81st percentile) and Math (77th). Science scores at the 68th percentile represent the one area with room to grow, and it's worth noting for families whose students are particularly science-focused. That said, Archer is a well-established school in Lawrenceville — the county seat — and benefits from a central location and a long track record in the community. It's a school that serves a broad cross-section of Gwinnett families and offers a full range of programs and activities. For many families in its attendance zone, Archer represents a dependable, community-rooted option.
10. Lanier High School — Gwinnett County Schools, Sugar Hill
Lanier rounds out the top ten with an overall 77th percentile ranking, highlighted by a strong 82nd percentile in Science — its best subject score by a meaningful margin. English lands at the 79th percentile, while Math at the 65th is the area where there's the most opportunity for improvement. Located in Sugar Hill in the northern part of the county, Lanier serves a growing community that has seen significant residential development in recent years. The school has a genuine upside story, and families moving into the area will find a campus with strong community ties and a science program that outperforms its overall ranking. It's a school with real strengths if you know where to look.
How We Rank Schools
Every school on The School Advocate is ranked using state assessment data across three core subjects. English counts for 40% of the overall score, Math counts for 40%, and Science makes up the remaining 20%. Each school receives a percentile score in each subject reflecting how it performs relative to all other public high schools in Georgia — so a 90th percentile score means that school outperformed 90% of schools statewide in that subject. We weight English and Math equally as the two foundational academic skills, with Science as an important secondary indicator of overall academic strength.
Compare Schools Yourself
Rankings and descriptions can only tell you so much. If you want to dig into the numbers side by side — comparing specific schools by subject, district, or location — head over to theschooladvocate.com/compare. You can build your own custom comparisons and see exactly how any two or more schools stack up across English, Math, and Science. It's especially useful if you're deciding between attendance zones or weighing a move to a specific neighborhood and want the data in front of you before you commit.
Top High Schools
| Rank | School | District | City | English | Math | Overall |
|---|---|---|---|---|---|---|
| 1 | Buford High School | Buford City | Buford | 92 | 96 | 95 |
| 2 | North Gwinnett High School | Gwinnett County | Suwanee | 96 | 87 | 94 |
| 3 | Mill Creek High School | Gwinnett County | Hoschton | 89 | 83 | 89 |
| 4 | Brookwood High School | Gwinnett County | Snellville | 87 | 83 | 87 |
| 5 | Parkview High School | Gwinnett County | Lilburn | 81 | 90 | 86 |
| 6 | Seckinger High School | Gwinnett County | Buford | 83 | 86 | 86 |
| 7 | Paul Duke STEM High School | Gwinnett County | Norcross | 84 | 79 | 84 |
| 8 | Grayson High School | Gwinnett County | Loganville | 81 | 78 | 81 |
| 9 | Archer High School | Gwinnett County | Lawrenceville | 81 | 77 | 78 |
| 10 | Lanier High School | Gwinnett County | Sugar Hill | 79 | 65 | 77 |