Cobb Horizon High School
Score 59.7/100: better than 59% of Georgia combined schools on 2024-25 state tests. Schools are only compared with others of the same type in the same state. How we score schools
Performance (state tests, 2024-25)
% Proficient or Distinguished on state tests in Georgia, all students. Colored bars are green when the school is at or above the average for similar Georgia schools.
All 28 published results by grade and test
As published by Governor's Office of Student Achievement. "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | High school | Milestones EOC: American Literature and Composition | 20.7 | 319 |
| English language arts | Grade 9 | Milestones EOC_by_GRADE: American Literature and Composition | 0 | — |
| English language arts | Grade 10 | Milestones EOC_by_GRADE: American Literature and Composition | 3.6 | 28 |
| English language arts | Grade 11 | Milestones EOC_by_GRADE: American Literature and Composition | 29.1 | 172 |
| English language arts | Grade 12 | Milestones EOC_by_GRADE: American Literature and Composition | 12.7 | 118 |
| English language arts | All grades | Milestones EOG: English Language Arts | 42.3 | 71 |
| English language arts | Grade 7 | Milestones EOG_by_GRADE: English Language Arts | 42.9 | 21 |
| English language arts | Grade 8 | Milestones EOG_by_GRADE: English Language Arts | 42 | 50 |
| Math | High school | Milestones EOC: Algebra: Concepts and Connections | 28.4 | 141 |
| Math | Grade 8 | Milestones EOC_by_GRADE: Algebra: Concepts and Connections | 83.4 | 12 |
| Math | Grade 9 | Milestones EOC_by_GRADE: Algebra: Concepts and Connections | 34.1 | 85 |
| Math | Grade 10 | Milestones EOC_by_GRADE: Algebra: Concepts and Connections | 2.9 | 35 |
| Math | Grade 11 | Milestones EOC_by_GRADE: Algebra: Concepts and Connections | 0 | — |
| Math | Grade 12 | Milestones EOC_by_GRADE: Algebra: Concepts and Connections | 0 | — |
| Math | All grades | Milestones EOG: Mathematics | 23.7 | 72 |
| Math | Grade 7 | Milestones EOG_by_GRADE: Mathematics | 14.3 | 21 |
| Math | Grade 8 | Milestones EOG_by_GRADE: Mathematics | 27.5 | 51 |
| Science | High school | Milestones EOC: Biology | 23.9 | 180 |
| Science | Grade 9 | Milestones EOC_by_GRADE: Biology | 46.7 | 60 |
| Science | Grade 10 | Milestones EOC_by_GRADE: Biology | 16.4 | 73 |
| Science | Grade 11 | Milestones EOC_by_GRADE: Biology | 10 | 20 |
| Science | Grade 12 | Milestones EOC_by_GRADE: Biology | 3.7 | 27 |
| Science | All grades | Milestones EOG: Physical Science | 42.9 | 21 |
| Science | All grades | Milestones EOG: Science | 9.1 | 33 |
| Science | Grade 8 | Milestones EOG_by_GRADE: Physical Science | 42.9 | 21 |
| Science | Grade 8 | Milestones EOG_by_GRADE: Science | 9.1 | 33 |
| Social studies | All grades | Milestones EOG: Social Studies | 18.8 | 48 |
| Social studies | Grade 8 | Milestones EOG_by_GRADE: Social Studies | 18.8 | 48 |
School profile
- Grades
- 6-12
- Students
- 1,027
- Type
- Combined school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
"Typical" is the middle (median) combined school in Georgia. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).
Nearby combined schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around Atlanta
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
Georgia publishes the percentage of students at each performance level; we add up the levels it counts as proficient.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
Cobb Horizon High School at a glance
Cobb Horizon High School is a public combined school in Atlanta, Georgia, serving grades 6-12. It is part of the Cobb County school district. It has about 1,027 students (a typical Georgia combined school has 72). About 83% of students are eligible for free or reduced-price lunch, compared with 76% at a typical Georgia combined school, which is useful context when reading test results.
In 2024-25 state tests, 25% in English language arts (similar schools: 24%) and 27% in math (similar schools: 21%) reached the state standard (% Proficient or Distinguished). On our score, which compares it only with other Georgia combined schools, it scores 59.7 out of 100: better than 59% of them, ranking #38 of 93. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.