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Public high school · Cobb County · Marietta, Georgia

Kell High School

Kell High School rates 7.0, above the middle of Cobb County's high schools, whose rated median is 6.5.

High schools, 1 to 10This campus against public high schools around it that are rated on verified state test data.
7.0this school

7.0 on a one-to-ten scale; the Cobb County median is 6.5.

#773 of 2,270 schools in Georgia · Cobb County: 17 high schools rated, median 6.5

The brief

A Cobb County high school serving grades 9th – 12th.

Students at Kell High School score 56% proficient, which is above what's typical for similar communities (expected: 54%).

It ranks 773 of 2,270 schools in Georgia and 41 of 110 in Cobb County.

Math55%10 points above the Georgia average of 45%344 students tested · 2025 GA
Reading57%16 points above the Georgia average of 41%399 students tested · 2025 GA
Proficiency has held near 56% across the 2-year record (2024–2025).2025 GA; 32 test records from GA state assessments and EdFacts (NCES).

What the rating is made of, each out of 10

Student Progress
7.4
25% of the rating
Academics
8.2
25% of the rating
College Readiness
8.1
30% of the rating
Resources & Environment
3.4
20% of the rating
About this school's data1 correction under review · rating: low confidence · 7 sources, 2019–2025

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, an estimate, or describes a surrounding area rather than the school, that limitation is named here.

Attendance data is under correction. This existing Resources & Environment score and overall rating may still reflect an unverified attendance input.

Full Profile · 4/4 metrics

Multi-year averages used by the rating model: math 55% (multi-year average, 2009-2025) · reading/ELA 65% (multi-year average, 2009-2025).

School directory (enrollment, grades, staff, contact)
NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
  • Source period: SY 2023–24. A newer release may be available.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Math proficiency
State department of education · 2025 GA · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2025 GA. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Reading/ELA proficiency
State department of education · 2025 GA · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2025 GA. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Student progress (growth)
State assessments · Mixed source periods · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 30066; this does not measure the attendance area.
Programs (AP/IB, athletics, gifted)
CRDC via Urban Institute · SY 2021–22 · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: SY 2021–22. A newer release may be available.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24

The neighborhood

Where it sits, and what the area looks like.
Kell High School and the 20 nearest high schools, each pin colored by its score.Pins are locations, not attendance boundaries. Verify the enrollment path with the district.

The area

Median income
$112,067
Median home value
$373,500
Median rent
$1,760/mo
College educated
53.1%
Homeownership
75.9%
Poverty rate
6.9%

U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 30066; this is area context, not an attendance boundary.

Getting around

Walk Score
19
Car-Dependent
Bike Score
21
Somewhat Bikeable
City reported crime
1,825/100K
Reported Part-1 offenses (violent + property + arson) per 100,000 residents, from the FBI Uniform Crime Reporting program for Marietta. This is a city-level reported-crime measure, not a school safety rating.

Walk, transit and bike scores byWalk Score

FBI Uniform Crime Reporting · 2025 · city context (Marietta), not school-level safety or attendance eligibility. Source details

Source period: 2025. Freshness not available.

Programs and who goes here

What the campus offers, and who it enrolls.

Programs

AP and IB
4 AP courses
28.6% participation · state average 3 AP courses · CRDC via Urban Institute · SY 2021–22
Athletics
23 sports
11 boys' · 12 girls' · 31 teams (incl. JV) · CRDC via Urban Institute · SY 2021–22
Advanced STEM courses
5 of 5
Algebra II, Advanced Math, Calculus, Chemistry, Physics · CRDC via Urban Institute · SY 2021–22
Gifted and talented
Available
A program for qualifying students · CRDC via Urban Institute · SY 2021–22

Who goes here

Free or reduced lunch
43.7%
Students qualifying for federal meal assistance. Shown separately, never in the score.

NCES Common Core of Data (CCD).

Compare nearby

Grade-compatible schools using the same rating model.
Public-school ratings. Grade-compatible schools within 5 miles, best rated first.
  1. 7.8Compare →
  2. 7.3Compare →
  3. 7.1Compare →
  4. Kell High Schoolthis school
    7.0
  5. 6.7Compare →
  6. 6.5Compare →
  7. 6.3Compare →
Six grade-compatible schools using the same rating model sit within 5 miles, and three rate higher than Kell High School.Public-school ratings. Straight-line distance from this campus. Pins are locations, not attendance boundaries; verify the enrollment path with the district.

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

The record

What is on file, and where each number came from.

Questions families ask

What grades does Kell High School serve?

Kell High School serves students in grades 9th through 12th.

How many students attend Kell High School?

Kell High School has an enrollment of approximately 1,582 students.

What is the student-teacher ratio at Kell High School?

The student-teacher ratio at Kell High School is 17.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Kell High School rank in GA?

Kell High School ranks #773 of 2,270 schools in GA.

What is Kell High School's MySchoolScout rating?

Kell High School has a current MySchoolScout rating of 7.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Kell High School?

Based on loaded state assessment records, Kell High School has 55% math proficiency (multi-year average, 2009-2025) and 65% reading/ELA proficiency (multi-year average, 2009-2025).

Is Kell High School a charter school?

No, Kell High School is not a charter school. It is a traditional public school operated by the local school district.

Is Kell High School a Title I school?

No, Kell High School is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Kell High School?

43.7% of students at Kell High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

School facts

Grades
9th – 12th
Enrollment
1,582
Student-teacher ratio
17.6:1
Teachers (FTE)
90
Type
Regular
Title I
No
Setting
Large Suburb
County
Cobb County
4-year graduation
94.0%
Class of 2023
Rank in district
#41 of 110
Schools in district
110
District spending per student
$14,680
NCES F-33 · FY 2023 · This annual source is three years behind the current year.
District child poverty rate
9.1%
Census SAIPE · 2024
Area population (ZIP 30066)
60,961
Area average commute
28.5 min
Area median age
38.5

NCES Common Core of Data (CCD) (SY 2023–24).

Related reading

Data from NCES Common Core of Data, Georgia Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.