1
What's one community event at Kell High School more people should show up to?
Community prompt from u/allk12. Replies below.
Enrollment
1,587
High
DISTRICT 2,124 · STATE 1,120
SCHOOL COMMUNITY·COBB COUNTY·NCES 130129002526
Kell High School
4770 Lee Waters Rd, Marietta, GA 30066 · (678) 494-7844 · Cobb County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,587 STUDENTS
Student : Teacher
17.2:1
92 FTE teachers
DISTRICT 16.9:1 · STATE 15.2:1
Free / Reduced Lunch
43%
685 students
DISTRICT 56% · STATE 74%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 431 | 27% |
| Grade 10 | 403 | 25% |
| Grade 11 | 367 | 23% |
| Grade 12 | 386 | 24% |
Student demographics
70%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 71% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on published attendance-zone data from Cobb County. Zones change; confirm enrollment with the district.
Test scores
Georgia Milestones 2024-25 . % Proficient or DistinguishedMath
59.6%
GA avg 44.6% . +19.9pp since 2021
What this means: On the Georgia Milestones, Georgia's statewide test, about 60 of every 100 students at this school do math at grade level. The Georgia average is about 45 of 100. Math scores are up about 20 points since 2021.
Georgia Milestones results by year
| School year | Math |
|---|---|
| 2024-25 | 59.6% |
| 2023-24 | 50.5% |
| 2022-23 | 41.1% |
| 2021-22 | 39.7% |
% Proficient or Distinguished, all students and all tested grades.
Source: Georgia Milestones. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
67.3%
composite math + reading, all grades
Predicted
55.0%
based on GA schools with similar FRL share
Beats by
+12.3pp
above demographic expectation
What this means: About 67% of students here test proficient in math and reading, compared with the roughly 55% 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 →
Schools most like Kell High School
Kell High School's state test result (67.3% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Kell High School this school | 1,587 | 43.2% | 67.3% |
| Loganville High School Loganville | 1,911 | 44.0% | 64.6% |
| Carrollton High School Carrollton | 1,859 | 50.5% | 39.0% |
| Cartersville High School Cartersville | 1,469 | 52.4% | 37.2% |
| East Paulding High School Dallas | 1,985 | 48.5% | 34.9% |
| Evans High School Evans | 1,800 | 38.6% | 46.5% |
Matched among Georgia high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Kell High School ranks
Among high schools| Measure | This school | In Georgia | In Cobb County |
|---|---|---|---|
| State test proficiency ranked highest first | 67.3% | #37 of 411 | #7 of 17 |
| Math proficiency ranked highest first | 59.6% | #74 of 417 ▲ 46 | #7 of 17 ▲ 1 |
| Enrollment ranked largest first | 1,587 | #134 of 480 | #16 of 19 |
| Students per teacher ranked fewest first | 17.2:1 | #302 of 413 | #10 of 17 |
| Diversity index ranked most diverse first | 69.8% | #28 of 413 | #5 of 17 |
| Free and reduced lunch ranked highest share first | 43.2% | #340 of 425 | #10 of 17 |
| Enrollment change since 2017-18 ranked fastest growth first | +4.6% | #167 of 226 | #5 of 10 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,587
+105 (+7%) vs 2020
-7% since 2010-11, when it was 1,709
Student : Teacher
17.2:1
was 17.6:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,587 | 92.1 | 17.2:1 | 43% (685) |
| 2023-24 | 1,582 | 90.5 | 17.5:1 | 44% (691) |
| 2022-23 | 1,506 | 93.1 | 16.2:1 | 32% (479) |
| 2020-21 | 1,482 | 84 | 17.6:1 | 28% (419) |
| 2017-18 | 1,517 | 85.1 | 17.8:1 | 32% (492) |
| 2015-16 | 1,483 | 83 | 17.9:1 | 33% (482) |
| 2010-11 | 1,709 | 95 | 18.0:1 | 30% (507) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Kell High School.
Since 2017-18: students up 5% (1,517 to 1,587); teachers up 8% (85.1 to 92.1).
About Kell High School
Kell High School is a public high school run by Cobb County in Marietta, Georgia. Enrollment totals 1,587 students across grades 9 through 12. On average, high schools in Georgia enroll around 1,120, and this school is 42% larger than that mark.
Kell High School belongs to Cobb County, a district of 110 schools and 105,738 students.
The biggest share of students at Kell High School, 43%, is White. The remaining shares are 25% Black, 23% Hispanic, 6% multiracial, and 3% Asian. The diversity index for Kell High School is 70%. For US public schools as a whole it is 70%.
The student-to-teacher ratio at Kell High School is 17.2:1, based on 92.1 full-time-equivalent teachers. The average for high schools in Georgia is 15.2:1, so this school has more students per teacher. Kell High School counts 43% of students as eligible for free or reduced-price lunch. Public schools in Cobb County average 53%.
After adjusting for student poverty, Kell High School lands between the top and bottom 10% of Georgia schools. Its average proficiency rate across its state test results is 67.3%; the prediction is 55.0%.
Looking at the county, Cobb County, the median household earns about $102,738 a year, the share of adults with a bachelor's degree or higher is 51%, and about 6% of people live in poverty. Counting Kell High School, Cobb County has 129 public schools.
Nicholson Elementary School sits about 1.0 miles from Kell High School. Kell High School has at least 8 other public schools within five miles. The nearest schools with test data average 60.3%, lower than Kell High School's 67.3%.
The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment rose by 7% across 4 years, from 1,482 in 2020-21 to 1,587 in 2024-25.
The allk12 page for Kell High School lets the school community talk about pickup and drop-off, after-school programs, and teacher feedback. Current and former families are welcome to add their experience.
Cobb County at a glance
View full county profilePopulation
775,208
Census ACS
Median income
$102,738
Household, ACS
Bachelor's+
51%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
129
116,609 students
Quick facts
Related schools
Other schools in Cobb County
- Campbell High SchoolHigh · 3,085 students
- Osborne High SchoolHigh · 2,790 students
- Walton High SchoolHigh · 2,705 students
- Pebblebrook High SchoolHigh · 2,574 students
- North Cobb High SchoolHigh · 2,463 students
- Wheeler High SchoolHigh · 2,401 students
Other schools in Marietta
- Osborne High SchoolHigh · 2,790 students
- Walton High SchoolHigh · 2,705 students
- Marietta High SchoolHigh · 2,526 students
- Wheeler High SchoolHigh · 2,401 students
- Lassiter High SchoolHigh · 2,005 students
- Pope High SchoolHigh · 1,793 students
Nearby schools
- Nicholson Elementary School1.0 mi · 413
- Keheley Elementary School1.1 mi · 393
- McCleskey Middle School1.3 mi · 540
- Davis Elementary School2.0 mi · 635
- Blackwell Elementary School2.1 mi · 580
- Rocky Mount Elementary School2.3 mi · 576
Frequently asked questions
About Kell High SchoolHow large is Kell High School?
Kell High School enrolls approximately 1,587 students in grades 09-12.
What age range does Kell High School serve?
Kell High School serves students from grade 09 through grade 12.
How many students per teacher at Kell High School?
Approximately 17.2:1 students per teacher at Kell High School.
How diverse is Kell High School?
Kell High School reports a student body of 43% White, 23% Hispanic, 25% Black, 3% Asian, 6% Two or more.
What district is Kell High School in?
Kell High School is part of Cobb County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.