Gwinnett County is the largest school district in Georgia and one of the twenty largest in the United States, with 149 public schools serving approximately 195,000 students across 15 cities. The county's 27 high schools range from some of the strongest academic performers in metro Atlanta to schools struggling well below state averages, and the variation between them is large enough that where you live within the county shapes your child's educational experience significantly. This breakdown ranks Gwinnett's public high schools by 2025 Georgia Milestones math and science scores, the most recent assessment data available on each school's allk12 scores page, and organizes them by corridor with current rent data for each city.
The Georgia state average for high school math proficiency sits around 28% meeting or exceeding grade level, which means the county's top performers are outpacing the state by 30 to 40 percentage points. The county average is pulled up by a cluster of genuinely strong schools in the northern and eastern corridors, and pulled down by a smaller group of schools in the western and central parts of the county where outcomes lag significantly.
The Top Tier: Specialized and Magnet Programs
Before ranking the comprehensive high schools, the county's three specialized campuses deserve specific attention because they operate outside the standard attendance zone system and are accessible by application from anywhere in the county.
Gwinnett School of Mathematics, Science and Technology (GSMST) in Lawrenceville posts 99.6% science proficiency, the highest score of any school in the county by a wide margin, with 1,275 students enrolled. The GSMST scores page reflects a magnet school with competitive admissions drawing the county's highest-achieving STEM-oriented students. Admission requires a rigorous application process including grades, test scores, and teacher recommendations, and the school is routinely ranked among the top high schools in Georgia and the entire United States. For families whose students qualify and are lucky enough to be admitted, it is the strongest academic option in the county regardless of where they live.
Paul Duke STEM High School in Norcross posts 59.1% math and 60.5% science proficiency with 1,222 students. While not at GSMST's level, Paul Duke performs well above the county average and offers a project-based STEM curriculum to students admitted through a county-wide application process. The Paul Duke scores page shows consistent above-average performance across recent assessment cycles.
McClure Health Science High School in Duluth posts 41.4% math and 39.2% science with 1,146 students, serving students interested in health professions pathways through a specialized curriculum. McClure's scores are above the state average but below the county's top comprehensive schools, and the school's value is as much about career preparation as raw academic performance metrics.
The Top Comprehensive Schools: 55% and Above Math Proficiency
Parkview High School in Lilburn leads the county's comprehensive high schools with 66.7% math and 63.6% science proficiency and 3,279 students enrolled. The Parkview scores page shows multi-year consistency in the mid-60s, making it the strongest large comprehensive high school in the county. Parkview serves the Lilburn and Stone Mountain Road corridor and has built a reputation as one of the premier public schools in metro Atlanta, with strong AP participation, a nationally recognized band program, and deep community investment. Rent in Lilburn averages $1,887/month, reasonable given the school quality it provides access to.
North Gwinnett High School in Suwanee posts 60.6% math and 73.3% science proficiency with 3,067 students, and holds a 5.0 community rating on allk12, the only high school in the county with that distinction. The North Gwinnett scores page shows particularly strong science performance, above even Parkview, reflecting a school with exceptional STEM programming and a highly engaged parent community in the Sugar Hill and Suwanee corridor. Rent in Suwanee averages $1,908/month.
Brookwood High School in Snellville posts 58% math and 70.1% science with 3,880 students, making it the largest high school in the county and one of the largest in Georgia. Despite its size, Brookwood maintains strong academic performance, with science proficiency that ranks among the top three in the county. The Brookwood scores page demonstrates that scale and quality can coexist in Gwinnett's best attendance zones. Snellville rent averages $2,131/month, one of the higher figures in the county and reflecting the Brookwood premium.
Mill Creek High School in Hoschton posts 59.3% math and 64.5% science with 2,745 students. Mill Creek serves the northeastern Gwinnett corridor along the Highway 124 corridor near the Barrow County line and has built a strong academic reputation driven by the demographics of the newer residential development in that area. Hoschton rent averages $2,214/month, the second-highest in the county, reflecting strong demand for the Mill Creek attendance zone.
Grayson High School in Loganville posts 55.9% math and 58% science with 3,480 students. Grayson serves the eastern Gwinnett corridor along the Highway 78 corridor near Walton County and is consistently one of the county's stronger performers. Loganville rent averages $2,355/month, the third-highest in the county, driven by the Grayson school reputation and the community's suburban character.
Dacula High School in Dacula posts 54.2% math and 49.5% science with 2,534 students. Dacula serves the northeastern Gwinnett area near the Barrow County border and performs well above county and state averages. Dacula rent averages $2,513/month, the highest in the county, which is notable for a city that doesn't carry the same name recognition as Suwanee or Snellville. The combination of strong schools and newer housing stock drives significant demand.
The Strong Middle Tier: 40% to 55% Math Proficiency
Peachtree Ridge High School in Suwanee posts 38.7% math and 54% science with 3,304 students. Peachtree Ridge sits within the same Suwanee zip codes as North Gwinnett but serves a different attendance zone with a more economically diverse student population, producing meaningfully lower math scores despite the same city address. Families choosing between North Gwinnett and Peachtree Ridge attendance zones in Suwanee are making a decision that matters. The Peachtree Ridge scores page shows this gap clearly.
Collins Hill High School in Suwanee posts 45.3% math and 54% science with 2,605 students, performing above state averages across both subjects. Collins Hill serves the western Suwanee corridor and has a strong athletics culture alongside solid academics. Rent in Suwanee applies across all three high schools zoned there, making attendance zone verification before committing to any Suwanee address essential.
Archer High School in Lawrenceville posts 48.3% math and 48.7% science with 3,073 students, performing above state averages and serving the northeastern Lawrenceville corridor. Central Gwinnett High School in Lawrenceville posts 40% math and 51% science with 2,444 students. Lawrenceville rent averages $1,842/month, the most affordable of the county's cities with above-average schools. Mountain View High School in Lawrenceville posts 43.7% math and 48.7% science with 2,285 students, completing a three-school Lawrenceville cluster that all performs above state average at the county's most affordable rent.
Lanier High School in Sugar Hill posts 40.3% math and 45.4% science with 1,861 students, above state average and serving the Sugar Hill corridor in northwestern Gwinnett. Sugar Hill rent averages $1,947/month. Shiloh High School in Snellville posts 42.3% math and 32% science with 2,200 students, and Dacula High is already covered above.
The Lower Tier: Below 35% Math Proficiency
Several Gwinnett County high schools post scores below or near the state average, reflecting attendance zones with higher concentrations of economically disadvantaged students and, in some cases, large English language learner populations.
Norcross High School posts 35.8% math and 38.2% science with 2,395 students. Peachtree Ridge at 38.7% math sits near this tier despite its Suwanee address. Duluth High School posts 28.8% math and 50.1% science with 2,666 students, an unusual combination where science proficiency is considerably stronger than math. Norcross rent averages $1,461/month, the most affordable in the county, and Duluth averages $1,654/month, both reflecting lower housing demand in attendance zones where school performance is weaker.
South Gwinnett High School in Snellville posts 30.2% math and 29.8% science with 2,588 students, near the state average. Berkmar High School in Lilburn posts 25.8% math and 25.3% science with 3,089 students. Discovery High School in Lawrenceville posts 23.6% math and 38.9% science with 2,730 students. Meadowcreek High School in Norcross posts 18.8% math and 21.8% science with 2,640 students, the lowest scores of any comprehensive high school in the county.
These schools serve student populations with significantly higher rates of poverty and English language learners than the county's top-performing campuses. The gap between Parkview at 66.7% math and Meadowcreek at 18.8% in the same county, with the same district administration and the same per-pupil funding base, reflects the reality that attendance zone demographics drive outcomes more than any district-level policy in a county this large and economically diverse.
The Attendance Zone Problem in Gwinnett
Gwinnett County's school quality variation creates a specific challenge for families relocating to the county: the city name on a listing tells you almost nothing about which school your child would attend. Suwanee addresses can feed into North Gwinnett at 60.6% math, Peachtree Ridge at 38.7%, or Collins Hill at 45.3%, three meaningfully different academic outcomes from the same city. Snellville addresses can feed into Brookwood at 58% or South Gwinnett at 30.2%. Lawrenceville addresses spread across Archer, Central Gwinnett, Mountain View, and Discovery, ranging from 48.3% to 23.6% math proficiency.
The practical implication is that school zone verification before signing any lease is not optional in Gwinnett County. The Gwinnett County Public Schools website maintains an online attendance zone lookup tool where you can enter a specific address and see exactly which school it feeds into. Using it before committing to an address is the single most important step in school research for this county.
