Kell High School

4770 Lee Waters Rd
Marietta, GA 30066

( shown in map)

Top 30%

www.cobbk12.org

Carlton J. Kell High School is a public high school in the Cobb County School District in the US state of Georgia. The school is located in unincorporated Cobb County with a Marietta address, just northwest of Atlanta. The school was founded in 2002 and serves students in the Cobb County area.

Serving 1,582 students in grades 9-12, Kell High School ranks in the top 30% of all schools in Georgia for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).

The percentage of students achieving is 45% (which is higher than the Georgia state average of 37%). The percentage of students achieving is 56% (which is higher than the Georgia state average of 40%).

The student:teacher ratio of 17:1 is higher than the Georgia state level of 14:1.

Minority enrollment is 55% of the student body (majority Black and Hispanic), which is lower than the Georgia state average of 65% (majority Black).

Quick Stats (2025)

Grades: 9-12
Enrollment: 1,582 students
Student:Teacher Ratio: 17:1
Minority Enrollment: 55%
: 91% (Top 50% in GA)
: Top 30%
: 45% (Top 50%)
: 56% (Top 20%)
: 65% (Top 10%)
Source: National Center for Education Statistics (NCES), GA Dept. of Education

Top Rankings

Kell High School ranks among the top 20% of public schools in Georgia for:

School Overview

Kell High School's student population of 1,582 students has stayed relatively flat over five school years.

The teacher population of 91 teachers has grown by 7% over five school years.

Grades Offered

Grades 9-12
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Kell High School
9	451
10	397
11	385
12	349

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Total Students

1,582 students

View Data

Total Students Trends Over Years (2003-2023)
Year	Kell High School
2023	1,506
2022	1,496
2021	1,482
2020	1,526
2019	1,526
2018	1,559
2017	1,559
2016	1,483
2015	1,548
2014	1,538
2013	1,568
2012	1,681
2011	1,709
2010	1,806
2009	1,807
2008	1,940
2007	1,976
2006	1,968
2005	1,888
2004	1,600
2003	1,097

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Gender %

Total Classroom Teachers

91 teachers

View Data

Total Classroom Teachers Trends Over Years (2003-2023)
Year	Kell High School
2023	93
2022	85
2021	85
2020	85
2019	85
2018	82
2017	82
2016	83
2015	83
2014	83
2013	92
2012	97
2011	95
2010	109
2009	119
2008	119
2007	114
2006	112
2005	108
2004	109
2003	82

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Year Founded

2002

Colors

White, Black, Copper

School Rankings

Kell High School ranks within the top 30% of all 2,204 schools in Georgia (based off of combined math and reading proficiency testing data).

The of Kell High School is 0.69, which is less than the diversity score at state average of 0.71. The school's diversity has stayed relatively flat over five school years.

This School

State Level (GA)

#478 out of 2204 schools
(Top 30%)

View Data

Overall School Rank Trends Over Years (2011-2022)
Year	Kell High School
2022	#478
2021	#1354
2019	#590
2018	#476
2017	#464
2016	#336
2015	#418
2014	#1512
2013	#1113
2012	#1337
2011	#368

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45%

37%

View Data

Math Proficiency Comparison Over Years (2011-2022)
Year	Kell High School	Georgia	Cobb County School District
2022	45%	37%	47%
2021	28%	36%	39%
2019	45%	44%	54%
2018	49%	42%	52%
2017	53%	41%	51%
2016	52%	41%	50%
2015	51%	38%	46%
2014	46%	79%	84%
2013	84%	83%	89%
2012	66%	81%	87%
2011	93%	84%	88%

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56%

40%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Kell High School	Georgia	Cobb County School District
2022	56%	40%	50%
2021	21%	39%	45%
2019	63%	45%	55%
2018	59%	42%	52%
2017	51%	41%	53%
2016	60%	40%	51%
2015	48%	39%	50%
2014	95%	94%	97%
2013	94%	93%	96%
2012	95%	93%	96%
2011	95%	91%	94%

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65%

40%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Kell High School	Georgia	Cobb County School District
2022	65%	40%	47%
2021	60%	38%	45%

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Student : Teacher Ratio

17:1

14:1

View Data

Student-Teacher Ratio Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	16:1	14:1	14:1
2022	18:1	14:1	14:1
2021	17:1	14:1	14:1
2020	18:1	15:1	15:1
2019	18:1	15:1	15:1
2018	19:1	16:1	15:1
2017	19:1	15:1	15:1
2016	18:1	16:1	15:1
2015	19:1	16:1	15:1
2014	19:1	16:1	16:1
2013	17:1	16:1	15:1
2012	17:1	15:1	15:1
2011	18:1	15:1	14:1
2010	17:1	14:1	13:1
2009	15:1	14:1	13:1
2008	16:1	14:1	13:1
2007	17:1	14:1	14:1
2006	18:1	15:1	15:1
2005	17:1	15:1	15:1
2004	15:1	16:1	15:1
2003	13:1	16:1	15:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	3%	5%	7%
2022	3%	5%	6%
2021	3%	5%	6%
2020	3%	4%	6%
2019	3%	4%	6%
2018	1%	4%	6%
2017	1%	4%	6%
2016	1%	4%	5%
2015	1%	4%	6%
2014	2%	4%	5%
2013	3%	4%	5%
2012	3%	4%	5%
2011	3%	4%	5%
2010	3%	4%	6%
2009	5%	4%	6%
2008	5%	4%	6%
2007	4%	4%	6%
2006	4%	4%	5%
2005	5%	4%	6%
2004	4%	3%	4%
2003	4%	3%	5%

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Hispanic

22%

19%

View Data

Hispanic Student Percentage Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	22%	18%	25%
2022	20%	18%	24%
2021	20%	17%	24%
2020	17%	16%	22%
2019	17%	16%	22%
2018	17%	15%	21%
2017	17%	15%	21%
2016	16%	15%	21%
2015	14%	14%	19%
2014	13%	13%	19%
2013	10%	13%	18%
2012	10%	12%	17%
2011	9%	12%	17%
2010	8%	11%	16%
2009	9%	11%	16%
2008	8%	11%	17%
2007	8%	10%	15%
2006	7%	9%	14%
2005	7%	9%	12%
2004	7%	7%	10%
2003	7%	6%	9%

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Black

25%

36%

View Data

Black Student Percentage Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	24%	36%	30%
2022	23%	36%	31%
2021	22%	36%	31%
2020	20%	37%	31%
2019	20%	37%	31%
2018	24%	37%	32%
2017	24%	37%	32%
2016	24%	37%	32%
2015	24%	37%	32%
2014	22%	37%	32%
2013	21%	37%	31%
2012	21%	37%	31%
2011	19%	37%	31%
2010	18%	37%	32%
2009	18%	39%	31%
2008	17%	39%	30%
2007	17%	39%	30%
2006	18%	39%	31%
2005	16%	38%	29%
2004	15%	38%	28%
2003	13%	38%	26%

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White

45%

35%

View Data

White Student Percentage Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	46%	36%	33%
2022	49%	37%	34%
2021	50%	38%	35%
2020	54%	39%	37%
2019	54%	39%	37%
2018	54%	40%	38%
2017	54%	40%	38%
2016	56%	41%	39%
2015	57%	42%	40%
2014	59%	43%	41%
2013	62%	43%	43%
2012	63%	44%	44%
2011	65%	44%	44%
2010	67%	45%	46%
2009	68%	46%	47%
2008	70%	46%	47%
2007	71%	47%	49%
2006	71%	48%	50%
2005	72%	49%	53%
2004	74%	52%	58%
2003	76%	53%	60%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	5%	5%	5%
2022	5%	4%	5%
2021	5%	4%	4%
2020	6%	4%	4%
2019	6%	4%	4%
2018	4%	4%	3%
2017	4%	4%	3%
2016	3%	3%	3%
2015	4%	3%	3%
2014	4%	3%	3%
2013	3%	3%	3%

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All Ethnic Groups

0.69

0.71

View Data

Diversity Score Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	0.69	0.71	0.73
2022	0.67	0.70	0.73
2021	0.66	0.70	0.73
2020	0.64	0.69	0.72
2019	0.64	0.69	0.72
2018	0.63	0.68	0.71
2017	0.63	0.68	0.71
2016	0.61	0.68	0.70
2015	0.60	0.67	0.70
2014	0.59	0.67	0.70
2013	0.57	0.67	0.69
2012	0.56	0.66	0.69
2011	0.54	0.66	0.68
2010	0.51	0.65	0.66
2009	0.52	0.64	0.66
2008	0.49	0.64	0.65
2007	0.48	0.63	0.64
2006	0.48	0.61	0.64
2005	0.46	0.61	0.62
2004	0.42	0.59	0.58
2003	0.40	0.58	0.56

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91%

84%

View Data

Graduation Rate Comparison Over Years (2012-2022)
Year	Kell High School	Georgia	Cobb County School District
2022	91%	84%	87%
2021	89%	84%	87%
2020	92%	85%	89%
2019	89%	83%	87%
2018	84%	83%	85%
2017	88%	82%	84%
2016	85%	81%	84%
2015	85%	81%	81%
2014	79%	75%	78%
2013	81%	74%	77%
2012	79%	72%	76%

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Participates in the

Yes

Eligible for

36%

59%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	23%	54%	35%
2022	29%	53%	39%
2021	22%	53%	35%
2020	23%	55%	35%
2019	23%	55%	35%
2018	27%	57%	38%
2017	27%	57%	38%
2016	26%	57%	38%
2015	25%	57%	39%
2014	26%	56%	40%
2013	27%	53%	39%
2012	25%	51%	38%
2011	24%	51%	37%
2010	19%	48%	34%
2009	15%	44%	31%
2008	13%	42%	29%
2007	13%	42%	28%
2006	13%	42%	28%
2005	10%	39%	25%
2004	8%	38%	22%
2003	4%	37%	18%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2003-2023)
Year	Kell High School	Georgia	Cobb County School District
2023	8%	6%	7%
2022	8%	5%	6%
2021	6%	4%	5%
2020	8%	5%	6%
2019	8%	5%	6%
2018	7%	5%	6%
2017	7%	5%	6%
2016	5%	5%	5%
2015	6%	6%	5%
2014	6%	6%	6%
2013	6%	7%	6%
2012	6%	7%	6%
2011	6%	7%	6%
2010	6%	8%	7%
2009	5%	9%	7%
2008	4%	9%	6%
2007	4%	9%	6%
2006	4%	8%	6%
2005	3%	8%	6%
2004	4%	8%	6%
2003	2%	8%	6%

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School Statewide Testing

View Education Department Test Scores

School District Name

Cobb County School District

Source: National Center for Education Statistics (NCES), GA Dept. of Education

School Notes

Kell High School is located at 4770 Lee Waters Road in Marietta, Georgia and is in the Cobb County School District. Kell's biggest rival is Lassiter. Kell opened in 2002.
Athletics: Kell is known for winning the 2003, 2004, 2005, and 2006 fast pitch softball state championships led by then-coach Todd Downes. They placed second in the state in baseball in the 2006 season led by head coach Donnie English. Kell's slowpitch softball team made it to state led by coach Shanna Estes in the 2006-2007.
Kell offers the following sports: Boys Basketball (2006 runner up in state); Girls Basketball; Equestrian; Boys Soccer; Girls Soccer; Boys Golf; Girls Golf; Football (2005 state playoffs 3rd overall); Fast pitch softball (2003,2004,2005,2006 state champs); Slow pitch softball (2006 state finals); Baseball (2005 State Runner Up); Girls Tennis; Boys Tennis; Boys Track and Field; Girls Track and field (2006 regional champions); Swim and Dive; Volleyball; Wrestling (2005 state champs); Cross Country (2006 state meet 16 overall); Boys Lacrosse (2006 state finals); Girls Lacrosse; Competition Cheerleading.
The Firings: Kell High Coach Reaches Settlement (WSB Radio) -- WSB News has learned that one of three Kell High School coaches, fired for the alleged misuse of school funds, has settled his dispute. Dennis Jordan, fired from his position as the Kell Longhorns' athletic director and head baseball coach, was scheduled for a hearing today. The hearing has been cancelled.
Details of the settlement have not been released, but WSB's Bob Parlante has been told that Jordan will not get his job back or any financial compensation.
The other coaches, head football coach Greg Vandagriff and head fast-pitch softball coach Todd Downes, has hearings scheduled for next month.
However, Cobb County school officials are hoping to reach a settlement prior to the hearings.
Former Kell High Principal John Flatt has admitted that he mishandled hundreds of thousands of dollars in school money and has said the three coaches fired in the aftermath didn't deserve to lose their jobs.
While fired as coaches, Vandagriff and Downes will stay on as teachers. Flatt says he was forced to retire after the results of an audit showed he'd overspent as much as $200,000.
Kell Names Donnie English as Baseball Head Coach: Osborne Veteran Returns to Cobb to Helm Longhorns. Donnie English, one of the most successful baseball coaches in Cobb County history, has been named head coach for the Kell High School baseball program. English retired in 2001 after a 29-year tenure at Osborne High School and returns to Cobb after coaching at Douglas County High School for the past three years. English and his Osborne teams won an impressive eight regional championships and five sub-region titles between 1975 and 1997, with a number of players drafted by Major League Baseball teams including Todd Jones, relief pitcher for the Florida Marlins. Kell Principal Dr. Michael Johnson, assistant principal and athletic director Roger McClure, and three representatives of the Kell baseball booster club all participated in interviewing candidates for the coaching job and agreed that English was an excellent choice to lead Kell back onto the diamond. Dr. Johnson is excited about what English brings to the Longhorns team and said, ï¿½Donnie English is one of the premier baseball coaches in Cobb County. We are fortunate to get him to work with us and he will continue the tradition that Kell has started.ï¿½ English is confident about Kellï¿½s team and what they can do in 2005. ï¿½They have good kids who are excited about playing baseball and thatï¿½s part of why I wanted to come to Kell,ï¿½ said English. ï¿½They are a young team with lots of players returning and we want to build on what they accomplished last year.ï¿½ The Longhorns Varsity baseball team earned a 15-11 record in 2004, finishing over .500 in their first year of eligibility in region 5-AAAAA. Kell will compete in region 6-AAAAA in 2005 along with Lassiter, Pope, Alpharetta, Cherokee, Canton, Marietta, Milton, Roswell, Sequoyah, and Woodstock high schools.

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Kell High School's ranking?

Kell High School is ranked #478 out of 2,204 schools, which ranks it among the top 30% of public schools in Georgia.

What schools are Kell High School often compared to?

Kell High Schoolis often viewed alongside schools like Lassiter High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

45% of students have achieved math proficiency (compared to the 37% GA state average), while 56% of students have achieved reading proficiency (compared to the 40% GA state average).

What is the graduation rate of Kell High School?

The graduation rate of Kell High School is 91%, which is higher than the Georgia state average of 84%.

How many students attend Kell High School?

1,582 students attend Kell High School.

What is the racial composition of the student body?

45% of Kell High School students are White, 25% of students are Black, 22% of students are Hispanic, 5% of students are Two or more races, and 3% of students are Asian.

What is the student:teacher ratio of Kell High School?

Kell High School has a student ration of 17:1, which is higher than the Georgia state average of 14:1.

What grades does Kell High School offer ?

Kell High School offers enrollment in grades 9-12 (No virtual instruction).

What school district is Kell High School part of?

Kell High School is part of Cobb County School District.

School Calendar

View the Kell High School yearly calendar below. Note key dates such as:

Event

Date

First Day of School

August 04, 2025 (Monday)

Fall Break

September 22, 2025 (Monday)

Spring Break

April 06, 2026 (Monday)

Last Day of School

May 20, 2026 (Wednesday)

School Reviews

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Quick Stats (2025)

Grades: 9-12
Enrollment: 1,582 students
Student:Teacher Ratio: 17:1
Minority Enrollment: 55%
: 91% (Top 50%)
: Top 30%
: 45% (Top 50%)
: 56% (Top 20%)
: 65% (Top 10%)
Source: National Center for Education Statistics (NCES), GA Dept. of Education