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Test scores

Marietta Sixth Grade Academy · Marietta, GA
See how it ranks: all Georgia schools by score · Cobb County schools by score

Georgia Milestones, SY 2024-25

All grades, all students. % Proficient or Distinguished.
English Language Arts
48.7%
State avg 40.1%
District avg 47.1%
County avg 48.0%
+11.6pp since 2021-22
Mathematics
40.0%
State avg 44.6%
District avg 50.5%
County avg 52.0%
+5.7pp since 2021-22
Science
N/A
State avg 40.6%
District avg 37.9%
County avg 46.3%
Social Studies
N/A
State avg 39.3%
District avg 43.3%
County avg 48.3%

What this means: On the Georgia Milestones, Georgia's statewide test, about 49 of every 100 students at this school read and write at grade level and about 40 of 100 do math at grade level. Across all Georgia schools, those numbers are about 40 and 45. Reading and writing scores are up about 12 points since 2021, while math scores are up about 6 points.

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
42.7%
composite math + reading, all grades
Predicted
43.7%
based on GA schools with similar FRL share
Beats by
-1.0pp
below demographic expectation

What this means: About 43% of students here test proficient in math and reading, compared with the roughly 44% typical for Georgia schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Georgia's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

By grade, SY 2024-25

School score vs state average per tested grade.
GradeEnglish Language ArtsMathematicsScienceSocial Studies
SchoolStaten testedSchoolStaten testedSchoolStaten testedSchoolStaten tested
Grade 648.7%41.4%68140.0%37.7%680N/AN/AN/AN/AN/AN/A

4-year history

All grades, all students. Marietta   Georgia avg

English Language Arts

39372021-2240462022-2342462023-2440492024-25
YearSchoolDistrictCountyState
SY 2024-2548.7%47.1%48.0%40.1%
SY 2023-2445.7%45.8%50.9%41.8%
SY 2022-2345.8%42.5%49.2%39.6%
SY 2021-2237.1%38.3%47.6%38.5%

Mathematics

38342021-2239392022-2343362023-2445402024-25
YearSchoolDistrictCountyState
SY 2024-2540.0%50.5%52.0%44.6%
SY 2023-2436.4%48.1%51.8%42.9%
SY 2022-2338.7%41.4%46.8%39.0%
SY 2021-2234.3%43.0%47.8%38.2%

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How to read these scores

What is Georgia Milestones?
Georgia public-school students in grades 3 through 8 take the Georgia Milestones End-of-Grade (EOG) tests in English Language Arts, Math, Science (grades 5/8), and Social Studies (grade 8). High school students take End-of-Course (EOC) Milestones in American Literature, Algebra, Biology, and US History.
What does "% Proficient or Distinguished" mean?
It is the percentage of students at the school who scored at "Proficient Learner" or "Distinguished Learner" on Georgia Milestones (top 2 of 4 performance levels: Beginning, Developing, Proficient, Distinguished). Proficient and above means the student is performing at or beyond grade level. A higher number is better.
What does 48.7% mean for English Language Arts at Marietta Sixth Grade Academy?
It means about 48.7 percent of students tested at Marietta Sixth Grade Academy performed at grade level or above on the Georgia Milestones English Language Arts test in 2024-25. The statewide average for Georgia that year was 40.1%. The other students fell into the lower performance levels.
How is the state average calculated?
It is a weighted average, not a simple average of each school's number. We multiply each public school's score by how many of its students tested, add those together for all schools in Georgia, and divide by the total students tested that year. This way a big school with 1,500 students counts more than a small school with 50 students, which is the right way to ask "how did the typical student do this year?". District and county averages on this page use the same method, just scoped to that district or county.
Where does this data come from?
Georgia Department of Education + Governor's Office of Student Achievement (GOSA), Georgia Milestones Assessment System (GMAS) End-of-Grade (grades 3-8) and End-of-Course (high school) assessments. School-level results from the GOSA Downloadable Data Repository. Headline metric is the cumulative "Proficient or Distinguished Learner" rate (top 2 of 4 Milestones performance levels).
How often is it updated?
Georgia Milestones is administered once a year (spring). Results are released by the state in the summer or early fall. We refresh this page after each annual release.

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