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Best High Schools in Zip Code 30066

Test scores delayed: 2026 rankings for Georgia do not yet include English Language Arts scores, which will not be released by the Georgia Department of Education until winter 2026.

At a glance

Schools

5,361

Students

5-star school

Top rankedLassiter High School15^th of 457 Georgia high schools

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Biggest riser

Lassiter High School up 3 spots statewide this year

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Summary:

Zip code 30066 in Marietta, Georgia, is served by three public high schools—Lassiter High School, Kell High School, and Sprayberry High School—all part of the Cobb County School District, which holds a 4-star rating and ranks in the 71st percentile statewide. These schools serve grades 9-12 and enroll a combined total of roughly 5,361 students, offering families a clear spectrum of academic environments within a single district.

Lassiter High School is the standout performer, ranking 15th in Georgia (97th percentile, 5 stars) with exceptional proficiency rates—74.9% in Algebra I, 79.6% in Biology, and 80.5% in US History—far exceeding district and state averages. Its 97.3% graduation rate leads the group, and its low chronic absenteeism (11.3%) and free/reduced lunch rate (13.57%) reflect a highly advantaged student body. Kell High School offers consistent, solid performance, ranking 57th (87th percentile, 4 stars) with proficiency rates above state averages in all subjects and a 93.8% graduation rate. Sprayberry High School ranks 133rd (71st percentile, 4 stars) and shows the most volatility, with proficiency rates below district averages in Algebra I (41.8%) and Biology (46.1%), though its 89.6% graduation rate still exceeds the state average.

Key takeaways for parents: socioeconomic factors and attendance strongly track with outcomes—Lassiter’s free/reduced lunch rate is roughly one-third of Kell’s and Sprayberry’s, and its chronic absenteeism is nearly half of Sprayberry’s 20.7%. Per-student spending does not predict success, as Lassiter spends the least ($13,092) yet achieves the best results. All three schools beat the state graduation rate of 87.2%, and dropout rates remain low. Year-over-year trends are mixed, with Lassiter improving in Algebra I but declining in US History, while Sprayberry improved in Algebra I but slipped in Biology and US History. For families, Lassiter represents elite academics, Kell offers dependable stability, and Sprayberry is a school addressing attendance and performance challenges while still keeping students on track to graduate.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				Milestones Assessment Algebra I (2026)	Milestones Assessment Biology (2026)	Milestones Assessment United States History (2026)	Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	Milestones Assessment Algebra I End of Course	Milestones Assessment Biology End of Course	Milestones Assessment United States History End of Course	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Sprayberry High School	Public	9-12	2525 Sandy Plains Rd	Marietta	30066	Cobb County	Cobb County	No	No	No	No	(770) 578-3200	1,769	105	16.8	48.6%	537 (30.4%)	521 (29.5%)	490 (27.7%)	111 (6.3%)	9 (0.5%)	3 (0.2%)	98 (5.5%)	56	133^rd of 457 public high schools	70.9%		68	90^th of 451 public high schools	80.0%	43	41.8	46.1	57.7	$13,848	$383	$13,465
Lassiter High School	Public	9-12	2601 Shallowford Rd	Marietta	30066	Cobb County	Cobb County	No	No	No	No	(678) 494-7863	2,005	111	18.1	13.6%	1,336 (66.6%)	146 (7.3%)	234 (11.7%)	168 (8.4%)	6 (0.3%)	1 (0.0%)	114 (5.7%)	88.5	15^th of 457 public high schools	96.7%		91.9	18^th of 451 public high schools	96.0%	3	74.9	79.6	80.5	$13,092	$323	$12,769
Kell High School	Public	9-12	4770 Lee Waters Rd	Marietta	30066	Cobb County	Cobb County	No	No	No	No	(678) 494-7844	1,587	92	17.2	43.2%	682 (43.0%)	393 (24.8%)	360 (22.7%)	43 (2.7%)	5 (0.3%)	1 (0.1%)	103 (6.5%)	73.8	57^th of 457 public high schools	87.5%		78.1	52^nd of 451 public high schools	88.5%	5	56.3	63.8	64.7	$13,530	$397	$13,133

Cities Near Zip Code 30066

City	Distance	# of Schools	Statewide Rank
Marietta	0.76 mi	59	81^st
Kennesaw	3.29 mi	16	80^th
Woodstock	4.87 mi	15	36^th
Acworth	5.33 mi	15	88^th
Roswell	6.27 mi	18	54^th

See the top GA Georgia cities

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Georgia Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.