School Score

Above average

64/100

Marietta, Georgia · 2022-23

Cobb County School District

Serving 106,147 students in 113 schools, Cobb County School District outperforms US averages. Math: 42% · Reading: 45% · Graduation: 88%.

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Reviewed by CodeOpx Data Team

Last updated: Aug 12, 2025Data: NCES CCD + state DOE 2022-23Report an error

Math proficiency

42%

District-wide

↑ 16.0% vs US

Reading proficiency

45%

District-wide

↑ 16.0% vs US

Graduation rate

88%

4-year

Enrollment

106,147

113 schools

Cobb proficiency

42% / 45%

"Cobb County School District students reached 42% math proficiency and 45% reading proficiency in 2022-23, versus 21% / 26% state averages."

Source: NCES + Georgia DOE

Graduation rate

88%

"Cobb County School District's 4-year graduation rate is 88%, above the US average of 87%."

Source: NCES

Spending per pupil

$11,200

"Cobb County School District spends $11,200 per student annually, below the US average of $17,280."

Source: NCES 2022-23

Cobb County School District · proficiency trend

% of students scoring proficient on state assessments. Local curves approximated from NAEP national trend where granular history is unavailable.

Data breakdown · Cobb County School District

Versus state and national averages

Math proficiency

42%

here

21%

state

26%

US avg

↑ 62%

Reading proficiency

45%

here

26%

state

29%

US avg

↑ 55%

Graduation rate

88%

here

84%

state

87%

US avg

↑ 1%

Student-teacher ratio

15.6:1

here

15.3:1

state

15.4:1

US avg

↑ 1%

Free/reduced lunch eligible

41.5%

here

60.4%

state

52.1%

US avg

Top schools in Cobb County School District

Notable schools in this district we track.

1
Walton High School
Grades 9-12 · comprehensive · 2,700 students
A

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Query Cobb County School District data

GET /api/school-rating?state=georgia&district=cobb-county-school-district

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People also search for about Cobb County School District

Hand-curated related pages on CodeOpx.

Is Cobb County School District a good district?Hot Cobb County School District test scores Cobb County School District graduation rate Cobb County School District school zones Best schools in Cobb County School DistrictHot Best districts in Georgia Schools in Marietta Crime in MariettaHot Cost of living in Marietta Mortgage rates in Georgia Property tax in Georgia Georgia school rankings

Methodology & data. District-level proficiency from state DOE rollups; enrollment and finance from NCES Common Core of Data 2022-23. CodeOpx School Score combines academics (40%), growth vs state (25%), equity (15%), graduation (10%), resources (10%). See /schools/methodology for the exact formula.

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People also ask about Cobb County School District

Is Cobb County School District a good school district?▾

Cobb County School District earns a CodeOpx School Score of 64/100 (B, Above average). It outperforms US averages, with 42% math and 45% reading proficiency.

How many schools are in Cobb County School District?▾

Cobb County School District operates 113 public schools serving 106,147 students in and around Marietta, Georgia.

What is Cobb County School District's graduation rate?▾

Cobb County School District's 4-year graduation rate is 88%, above the US average of 87%.

How much does Cobb County School District spend per student?▾

Cobb County School District spends approximately $11,200 per student per year (all funding sources), versus the US average of $17,280.

Where can I find Cobb County School District school zone boundaries?▾

Attendance zones are published by Cobb County School District directly. Census EDGE files provide school district boundaries; use the district's official site for granular school zone maps.