For many Korean-American and Korean national families, school quality is the single biggest factor in choosing where to live. This guide compares the elementary, middle, and high schools serving five communities Kelly works in most closely — Suwanee, Duluth, Johns Creek, Alpharetta, and East Cobb — using publicly available data from GreatSchools and each district’s own reporting. We’ve organized this page by school district rather than by town, since that’s how the data itself is actually structured, and because it reflects an honest picture rather than one drawn around city limits that don’t match real school boundaries.
Understanding the GreatSchools Rating
Each school below includes a GreatSchools Rating on a 1–10 scale. This number reflects how a school compares to other schools in Georgia — not a national or absolute standard. Scores of 7–10 are considered above average, 5–6 average, and below 4 below average. The rating blends several measures: academic growth over time (not just where students start), test score performance relative to the state, college readiness for high schools (graduation rates, SAT/ACT scores, AP/IB participation), and how well the school serves all student groups, including lower-income students and students with disabilities.
One distinction worth noting: this number is separate from “Community Reviews” — the star ratings parents leave. A school can have a 10/10 official rating and a more modest parent review average; those measure different things. We’d also note that Georgia’s state accountability system (CCRPI) stopped publishing a single combined score as of the 2025 report, following a federal transparency requirement — which is why this guide relies on GreatSchools ratings alongside graduation rates and test proficiency, all individually sourced and comparable across schools. GreatSchools itself recommends treating this as a helpful starting point, not the full picture — visiting a school in person still matters.
Seven of the eight high schools compared here sit at 9 or 10 out of 10 — genuinely excellent by GreatSchools’ own scale. Duluth High School is the one clear exception, at 6 out of 10. We think it’s more useful to name that plainly than to soften it, so families can weigh it accurately alongside everything else that matters in a decision — including that Duluth’s graduation rate (87%) is still above the Georgia state average (84%), and that Duluth remains the historic commercial and cultural anchor of Metro Atlanta’s Korean-American community.
Kelly’s service area spans three separate school districts, not one: Gwinnett County Public Schools (Suwanee and Duluth), Fulton County Schools (Johns Creek and Alpharetta), and Cobb County School District (East Cobb). The map below shows how these three districts relate geographically.
County boundaries: U.S. Census Bureau. Town locations approximate.
North Gwinnett: Suwanee & Duluth
Both towns fall under Gwinnett County Public Schools, but feed into different high schools.
| School | Level | GreatSchools Rating | Math Prof. | Reading Prof. | Grad. Rate |
|---|---|---|---|---|---|
| North Gwinnett HS | High | 10/10 | 81% | 75% | 97% |
| North Gwinnett MS | Middle | Ranked #8 in GA* | 77% | 75% | — |
| Duluth HS | High | 6/10 | 38–42% | 45% | 87% |
| Duluth MS | Middle | 7/10 | 35% | 37% | — |
*U.S. News ranking, used where GreatSchools does not publish a numeric score for this school.
Suwanee’s North Gwinnett cluster ranks among the strongest in the state at every level. Duluth’s schools serve a more economically and linguistically diverse student population, which shows up in the proficiency numbers above — worth knowing, and worth weighing against everything else Duluth offers as a community.
North Fulton: Johns Creek & Alpharetta
Both towns fall under Fulton County Schools. Alpharetta is the one town on this list that isn’t served by a single high school — depending on the exact address, students attend either Alpharetta High School or Milton High School.
| School | Level | GreatSchools Rating | Math Prof. | Reading Prof. | Grad. Rate |
|---|---|---|---|---|---|
| Johns Creek HS | High | 10/10 | 69–79% | 75% | 98% |
| River Trail MS | Middle | 8/10 | 78–80% | 79% | — |
| Alpharetta HS | High | 9/10 | 52% | 74% | 98% |
| Milton HS | High | 10/10 | 55% | 76% | 96% |
Both Johns Creek and Alpharetta offer excellent options — this is a case where the meaningful question isn’t “which school is better” (they’re close), but which specific address feeds which school, since that boundary runs through the middle of Alpharetta itself.
East Cobb: Walton, Pope & Lassiter
East Cobb is served by Cobb County School District and split among three high schools, all strong.
| School | Level | GreatSchools Rating | Math Prof. | Reading Prof. | Grad. Rate |
|---|---|---|---|---|---|
| Walton HS | High | 10/10 | 80% | 89% | 97% |
| Lassiter HS | High | 10/10 | 73–76% | 78% | 98% |
| Pope HS | High | 10/10 | 80% | 79% | 96% |
| Dodgen MS | Middle | 8/10 | 80–82% | 76% | — |
All three East Cobb high schools rank among the top 20 in Georgia. As with Alpharetta, the practical question for a buyer is which of the three a specific street address feeds — not which school is “best.”
Verify Your Specific School Zone
Everything above reflects each school as a whole — not any single address. School attendance boundaries can shift from year to year, and addresses just a few blocks apart sometimes feed different schools entirely. Before treating any of this as certain for a specific home, we’d recommend confirming directly with the district: Gwinnett County Public Schools, Fulton County Schools, or Cobb County School District. This is also exactly the kind of address-specific detail Kelly can help verify as part of a home search.
Contact Kelly to confirm school zoning for a specific address, or see our Atlanta Market page for current pricing context in these same communities.
Sources
- GreatSchools Ratings Methodology →
- North Gwinnett High School — GreatSchools →
- North Gwinnett Middle School — GreatSchools →
- Duluth High School — GreatSchools →
- Duluth Middle School — GreatSchools →
- Johns Creek High School — GreatSchools →
- River Trail Middle School — GreatSchools →
- Alpharetta High School — GreatSchools →
- Milton High School — GreatSchools →
- Walton High School — GreatSchools →
- Lassiter High School — GreatSchools →
- Pope High School — U.S. News Best High Schools →
- Dodgen Middle School — GreatSchools →
- County boundary data: U.S. Census Bureau