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Cobb County schools ranked by test score

Latest Georgia Milestones year (2024-25). 18 schools in Cobb County, Georgia with reported Mathematics scores. Georgia state average: 44.6%.
RankSchoolLevelMathematicsvs state
1Lassiter High School
Marietta · Cobb County
High72.1%+27.5pp
2Harrison High School
Kennesaw · Cobb County
High71.0%+26.4pp
3Walton High School
Marietta · Cobb County
High70.7%+26.1pp
4Hillgrove High School
Powder Springs · Cobb County
High66.6%+22.0pp
5Kennesaw Mountain High School
Kennesaw · Cobb County
High65.6%+21.0pp
6Pope High School
Marietta · Cobb County
High64.5%+19.9pp
7Kell High School
Marietta · Cobb County
High59.6%+15.0pp
8Allatoona High School
Acworth · Cobb County
High58.9%+14.3pp
9North Cobb High School
Kennesaw · Cobb County
High51.0%+6.4pp
10Wheeler High School
Marietta · Cobb County
High49.9%+5.3pp
11Marietta High School
Marietta · Marietta City
High47.7%+3.1pp
12Sprayberry High School
Marietta · Cobb County
High43.6%-1.0pp
13Campbell High School
Smyrna · Cobb County
High38.6%-6.0pp
14Pebblebrook High School
Mableton · Cobb County
High34.7%-9.9pp
15South Cobb High School
Austell · Cobb County
High32.0%-12.6pp
16Cobb Horizon High School
Atlanta · Cobb County
High29.3%-15.3pp
17McEachern High School
Powder Springs · Cobb County
High27.8%-16.8pp
18Osborne High School
Marietta · Cobb County
High21.4%-23.2pp

About this ranking

Schools are ranked by the percentage of students who scored at or above the Georgia Milestones % Proficient or Distinguished threshold on the latest available Georgia Milestones Mathematics test (school year 2024-25). Only public schools in Cobb County, Georgia with a reasonable cohort size are shown. A higher percentage is better.

The comparison column shows the gap to the Georgia statewide enrollment-weighted average. To compare against neighboring counties, use the full Georgia ranking.