Cosby High
Midlothian, VA · High School · Grades 9-12
Cosby High is a high school in Midlothian, VA with 2,385 students enrolled and a 70% proficiency rate. Part of Chesterfield County Public Schools. NCES data from the U.S. Department of Education.
Cosby High is a high school in Midlothian, VA that enrolls 2,385 students in grades 9-12, putting it among the larger public campuses in the Chesterfield County Public Schools. That headcount is above the 983-student average for schools in the district.
EDFacts assessment data puts 70% of students at or above grade level in combined math and reading, a little above the national midpoint where roughly half of tested students clear the bar. That is 20 points above the 49% average for the Chesterfield County Public Schools. Against the 46% Virginia statewide average, the school sits 24 points higher.
Over the last three reported years the district proficiency rate this school inherits has risen by about 31 points. As a high school, it reports a 80% adjusted-cohort graduation rate, the share of first-time ninth-graders who earn a regular diploma within four years.
The student-teacher ratio is 16.7 to 1, close to the U.S. average of about 16 to 1. A relatively low 15% of students qualify for free or reduced-price lunch.
Get Cosby High's new scores when they post
Subscribe for OpenSchoolData updates by email. No spam, unsubscribe anytime.
About This School
Cosby High is a high school located in Midlothian, Virginia. The school serves 2,385 students in grades 9-12. The student-to-teacher ratio is 16.7:1.
According to EDFacts assessment data, 70% of students meet grade-level proficiency standards in combined math and reading. The school reports a 80% graduation rate.
15% of students qualify for free or reduced-price lunch.
Cosby High is part of the Chesterfield County Public Schools in Virginia.
How This School Compares
Cosby High has 2,385 students enrolled, making it larger than the average school in Chesterfield County Public Schools (983 students). Its 70% proficiency rate is 20 percentage points above the district average of 49%. Compared to the Virginia state average of 46%, the school performs 24 points higher.
Other Schools in Chesterfield County Public Schools
Frequently Asked Questions
Cosby High has 2,385 students enrolled in grades 9-12. The student-to-teacher ratio is 16.7:1.
According to EDFacts data, 70% of students at Cosby High meet grade-level proficiency standards in combined math and reading assessments.
Cosby High has a 80% graduation rate, measuring the percentage of students who graduate within four years.
Cosby High is part of the Chesterfield County Public Schools in Midlothian, Virginia. 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.
Source: NCES Common Core of Data, 2026.