allk12 · Rankings · Lowest proficiency · Georgia · Cobb County · High schools

The lowest-performing public high schools by test proficiency in Cobb County, Georgia

Across Cobb County, Georgia, 17 public high schools are ranked here, ranked by the lowest composite state-assessment proficiency. Osborne High School leads the list at 23.1%, against a median of 54.4% across the ranked schools.

The table below is sortable and filterable, and the full list downloads as a CSV. Figures come from federal NCES enrollment data and, where applicable, state assessment results for 2024-25.

Schools ranked

Cobb County, Georgia

Best % Proficient

23.1%

Median % Proficient

54.4%

LOWEST PROFICIENCY · COBB COUNTY, GEORGIA

#	School	City	District	Level	% FRL	Students	% Proficient
1	Osborne High School	Marietta, GA	Cobb County	High	100%	2,790	23.1%
2	South Cobb High School	Austell, GA	Cobb County	High	90.3%	2,081	28.6%
3	Pebblebrook High School	Mableton, GA	Cobb County	High	96.5%	2,574	30.4%
4	McEachern High School	Powder Springs, GA	Cobb County	High	69.3%	2,175	37.0%
5	Marietta High School	Marietta, GA	Marietta City	High	56.7%	2,526	42.1%
6	Sprayberry High School	Marietta, GA	Cobb County	High	48.6%	1,769	43.5%
7	Campbell High School	Smyrna, GA	Cobb County	High	52.1%	3,085	50.8%
8	North Cobb High School	Kennesaw, GA	Cobb County	High	49.9%	2,463	53.5%
9	Wheeler High School	Marietta, GA	Cobb County	High	48.9%	2,401	54.4%
10	Allatoona High School	Acworth, GA	Cobb County	High	29.4%	1,560	62.1%
11	Kell High School	Marietta, GA	Cobb County	High	43.2%	1,587	67.3%
12	Hillgrove High School	Powder Springs, GA	Cobb County	High	30.3%	2,282	68.7%
13	Harrison High School	Kennesaw, GA	Cobb County	High	16.0%	2,224	72.4%
14	Kennesaw Mountain High School	Kennesaw, GA	Cobb County	High	40.6%	1,695	73.8%
15	Pope High School	Marietta, GA	Cobb County	High	10.1%	1,793	78.3%
16	Walton High School	Marietta, GA	Cobb County	High	7.6%	2,705	79.0%
17	Lassiter High School	Marietta, GA	Cobb County	High	13.6%	2,005	79.7%

Page 1 of 1 · top 17 of 17 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.