Summary:
Zip code 30060 in Marietta, GA is served by one large public high school, Osborne High School, which enrolls nearly 2,800 students in grades 9-12 and operates within the Cobb County School District.
Osborne High School is a high-poverty school where 100% of students qualify for free/reduced lunch, yet it shows promising signs of improvement. The school's statewide ranking jumped from 318th to 273rd in the most recent year, moving from the 30th to 40th percentile. Academically, the most notable gain came in Algebra I, where proficiency surged from 19.3% to 30.2%—a 56% relative increase. U.S. History is a relative strength, with Osborne actually exceeding the state average (39.5% vs. 38.5%). However, proficiency remains well below district and state averages in Biology (28.9% vs. 58.4% district) and Algebra I (30.2% vs. 59.4% district). The graduation rate of 78.9% trails the state average by 8.3 points, and the dropout rate of 3.8% is notably higher than the state's 2.4%.
The most pressing concern is chronic absenteeism: 30.9% of Osborne students are chronically absent—more than double the district rate of 14.2% and 74% higher than the state rate. This likely contributes to the achievement gaps and lower graduation rates. With per-student spending of $14,616 and a student-teacher ratio of 15.7:1, resources appear adequate, but they haven't closed the gaps. The school's mixed year-over-year results (strong gains in Algebra I and U.S. History, but a slight decline in Biology) suggest improvements may be tied to specific instructional focus areas rather than school-wide transformation. Given that Osborne sits within a high-performing district (71st percentile statewide), there is clear potential for improvement through targeted district support, particularly around attendance and student engagement strategies.
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