Very Good
#597 of 2,268 schools in GA
Top 26% in state
Kell High School
High School · Cobb County
4770 Lee Waters Rd, Marietta, GA 30066
Enrollment
1,582
Student-Teacher
17.6:1
Score
7.4
Grades
9th – 12th
Enrollment
1,582
Student-Teacher
17.6:1
Score
7.4
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Marietta
#29 of 58
public schools
Georgia high schools
#55 of 443
In district
#40 of 110
Cobb County
Academic growth
8.9 / 10
Exceptional
About Kell High School
Kell High School serves 1,582 students in grades 9 through 12 in Marietta's large suburban community. With 90 full-time equivalent teachers, the school maintains a 17.6:1 student-teacher ratio, providing reasonable class sizes for high school instruction. Academically, Kell High School earns a MySchoolScout rating of 6.4 out of 10 and ranks in the 63rd percentile among Georgia high schools, placing it at #833 out of 2,271 schools statewide.
The school demonstrates solid performance in English Language Arts, with 60% of students achieving proficiency or above across grade levels. In mathematics, 50% of students meet proficiency standards, indicating room for continued growth in this subject area. The school is situated in an affluent area of Cobb County, where the median household income reaches $108,309 and the median home value is $351,200.
The surrounding ZIP code 30066 houses nearly 61,000 residents, with 51% holding bachelor's degrees or higher and a low poverty rate of just 8.1%. This well-educated, economically stable community provides a supportive environment for student learning. Kell High School operates as a regular public school in one of Georgia's most desirable suburban locations, serving families who value educational achievement in the thriving Marietta area.
Score Breakdown
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Kell High School — Students at Kell High School score 55% proficient, which is above what's typical for similar communities (expected: 54%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
43.7%
Students qualifying for federal meal assistance
Test Scores GA GA (2023-24)
Based on 8 test records from GA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.9/10.
How Kell High School Compares
See how Kell High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has improved from 45% (2019) to 50.3% (2024). Reading/ELA proficiency has declined from 63% (2019) to 60.5% (2024).
Location
4770 Lee Waters Rd, Marietta, GA 30066
Nearby Alternatives
Families considering Kell High School may also want to explore other high schools in the area. Lassiter High School (rated 7.5/10, 2.7 miles away), with a very similar rating. Additionally, Woodstock High School (rated 6.9/10, 3.0 miles away, in nearby Woodstock), with a comparable rating. For more schools in Marietta, see our Marietta schools guide .
Nearby Schools
20 within 3.4 mi| School | Distance | Rating |
|---|---|---|
| Nicholson Elementary School Marietta | 1.0 mi | 8.2 |
| Keheley Elementary School Marietta | 1.1 mi | 6.6 |
| McCleskey Middle School Marietta | 1.3 mi | 8.0 |
| THE GARDEN SCHOOL Marietta | 1.5 mi | 7.0 |
| MONTESSORI SCHOOL OF WOODSTOCK Marietta | 1.6 mi | — |
| Blackwell Elementary School Marietta | 2.1 mi | 7.2 |
| Davis Elementary School Marietta | 2.0 mi | 7.9 |
| Rocky Mount Elementary School Marietta | 2.3 mi | 7.8 |
| SHILOH HILLS CHRISTIAN SCHOOL Kennesaw | 2.2 mi | 9.0 |
| Mabry Middle School Marietta | 2.5 mi | 7.1 |
| Addison Elementary School Marietta | 3.0 mi | 7.8 |
| Lassiter High School Marietta | 2.7 mi | 7.5 |
| Woodstock Middle School Woodstock | 2.9 mi | 5.5 |
| Woodstock Elementary School Woodstock | 3.1 mi | 4.8 |
| Daniell Middle School Marietta | 3.1 mi | 5.5 |
| Woodstock High School Woodstock | 3.0 mi | 6.9 |
| Simpson Middle School Marietta | 3.0 mi | 6.6 |
| GRACEPOINT SCHOOL Marietta | 3.5 mi | 7.3 |
| Chalker Elementary School Kennesaw | 3.1 mi | 4.7 |
| Mountain View Elementary School Marietta | 3.4 mi | 8.4 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 30066 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$112,067
Median Home Value
$373,500
Median Rent
$1,760/mo
Population
60,961
College Educated
53.1%
Homeownership
75.9%
Avg Commute
28.5 min
Poverty Rate
6.9%
Median Age
38.5
Community Profile
The community surrounding Kell High School has a median household income of $112,067. It is a well-educated community where 53% of adults hold a bachelor's degree or higher. The median home value in the area is $373,500, with a median rent of $1,760/month. The local poverty rate of 6.9% is relatively low. The average commute for residents is 29 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Morgan County High School Madison, GA | 7.4 |
| Southwest DeKalb High School Decatur, GA | 7.4 |
| Buford High School Buford, GA | 7.5 |
| Innovation Academy Alpharetta, GA | 7.5 |
| Lassiter High School Marietta, GA | 7.5 |
| Paul Duke STEM High School Norcross, GA | 7.5 |
Frequently Asked Questions
Common questions about Kell High School
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 is ranked #597 out of 2,268 schools in GA.
What is Kell High School's MySchoolScout rating?
Kell High School has a composite rating of 7.4 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Kell High School?
Based on the most recent state assessment data, Kell High School has 42.1% math proficiency and 50.1% reading/ELA proficiency.
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.
Neighborhood Context
Powered by 
FBI UCR 2024. City-level (Marietta). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,582
- Student-Teacher Ratio
- 17.6:1
- Teachers (FTE)
- 90
- Free/Reduced Lunch
- 43.7%
- Type
- regular
- Setting
- Large Suburb
- County
- Cobb County
- Phone
- (678) 494-7844
- Data Year
- 2023–2024
Resources & Links
District
Cobb County- District Enrollment
- 106,358
- Schools in District
- 110
- Per-Pupil Spending
- $14,680
- District Rank
- #40 of 110
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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