Osborne High School
Marietta, GA · High School · Grades 9-12
Osborne High School is a high school in Marietta, GA with 2,772 students enrolled and a 34% proficiency rate. Part of Cobb County. NCES data from the U.S. Department of Education.
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About This School
Osborne High School is a high school located in Marietta, Georgia. The school serves 2,772 students in grades 9-12. The student-to-teacher ratio is 16.9:1.
According to EDFacts assessment data, 34% of students meet grade-level proficiency standards in combined math and reading. The school reports a 71% graduation rate.
75% of students qualify for free or reduced-price lunch, indicating the school serves a predominantly low-income community.
Osborne High School is part of the Cobb County in Georgia. The school receives Title I federal funding.
How This School Compares
Osborne High School has 2,772 students enrolled, making it larger than the average school in Cobb County (970 students). Its 34% proficiency rate is 19 percentage points below the district average of 53%. Compared to the Georgia state average of 44%, the school performs 10 points lower.
Frequently Asked Questions
Osborne High School has 2,772 students enrolled in grades 9-12. The student-to-teacher ratio is 16.9:1.
According to EDFacts data, 34% of students at Osborne High School meet grade-level proficiency standards in combined math and reading assessments.
Osborne High School has a 71% graduation rate, measuring the percentage of students who graduate within four years.
Osborne High School is part of the Cobb County in Marietta, Georgia. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
this entity is one of the data points covered by this site’s U.S. K-12 school outcomes and enrollment dataset. The detail above comes directly from NCES Common Core of Data and EDFacts; the context that follows situates the headline numbers against the broader distribution across U.S. public schools and districts.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.