Summary:
Zip code 30064 in Marietta, Georgia, is home to one high school: Marietta High School, a large public school serving grades 9–12 within the Marietta City district, with an enrollment of 2,526 students and a student-teacher ratio of 14.3:1.
Marietta High School is on a strong upward trajectory. Its state ranking improved from 181st in 2023–2024 to 131st in 2025–2026, earning its first 4-star rating. The school’s graduation rate of 92.2% exceeds the state average of 87.2%, and its dropout rate of 1.8% is below the state’s 2.4%. In the most recent testing year, Biology proficiency reached 55.6%, well above the state’s 47.2%, while Algebra I proficiency (51.3%) also beat the state average (48.1%) but trailed the district by nearly 9 points. U.S. History remains the weakest subject at 38.6% proficiency, though it matches the state average and improved significantly from the prior year.
The most pressing concern is chronic absenteeism. At 33.4%, the school’s rate is nearly double the state average (17.7%) and 13.6 points higher than the district average (19.8%). This is especially notable given the school’s high graduation rate, suggesting students may be completing requirements despite missing substantial instructional time. On a positive note, per-student spending is solid at $16,079, and the school has shown remarkable year-over-year gains across all tested subjects—Algebra I jumped 8.3 points, Biology rose 9.8 points, and U.S. History improved 7.6 points. With more than half of students qualifying for free or reduced-price lunch, these gains indicate effective instructional strategies. If current trends continue, Marietta High School could break into the top 100 schools in Georgia within the next couple of years, but addressing attendance will be critical to sustaining long-term success.
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