Osborne High School

Osborne High School is one of the expansive senior highs in Marietta, Georgia, run under Cobb County, with 2,790 students on its rolls from grades 9 through 12. Compared to the state average of about 1,120 students per school, that is 149% bigger than typical.

Cobb County runs 110 schools in total, collectively educating 105,738 students. Osborne High School is one of those campuses.

Demographically, Osborne High School logs that 67% of the student body identifies as Hispanic. The remainder comes out to 26% Black, 4% White, 2% multiracial. The wider county runs roughly 15% Hispanic, putting the school's mix visibly more Hispanic than the area baseline.

On the income-and-resources front, Osborne High School logs 178 full-time-equivalent teachers, putting the student-to-teacher ratio at about 15.7:1. The state averages about 15.2:1, putting this campus right in line with peers. Around 100% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy. Set against Cobb County (around 53%), the school's rate is north of typical.

With demographic context factored in, Osborne High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 25.7%, the actual is 23.1%, a residual of -2.6 points.

Zooming out to the county, community-level numbers for Cobb County indicate median household earnings sit near $102,738, 51% of adults hold a bachelor's degree or higher, and roughly 6% of residents live below the federal poverty line. In all, Cobb County runs 129 public schools (combined enrollment of about 116,609 students), of which Osborne High School is one.

Nearest neighbor: LaBelle Elementary School, around 0.7 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Osborne High School at 7th of 7; the average score across the group is 30.3%.

The school occupies a commuter-belt site.

Looking at the recent track record. Looking back 7 years, enrollment at Osborne High School has rose 32%, going from 2,119 students in 2018 to 2,790 in 2025. The Black share of enrollment ticked down from 30% to 26% over that span. Class-load math has tightened: from 17.3:1 in 2018 to 15.7:1 in 2025.

On this page, recent activity here tends to focus on sports schedules, lunch menu changes, and school spirit week. Posting is open to anyone connected to the school.