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For the 2025-26 school year, there are 2 public high schools serving 1,069 students in Union County, SC.

The top ranked public high school in Union County, SC is Union County High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Union County, SC public high schools have an average math proficiency score of 41% (versus the South Carolina public high school average of 53%), and reading proficiency score of 86% (versus the 77% statewide average). High schools in Union County have an average ranking of 7/10, which is in the top 50% of South Carolina public high schools.

Union County, SC public high school have a Graduation Rate of 80%, which is less than the South Carolina average of 84%.

The school with highest graduation rate is Union County High School, with 80% graduation rate. Read more about public school graduation rate statistics in South Carolina or national school graduation rate statistics.

Minority enrollment is 49% of the student body (majority Black), which is less than the South Carolina public high school average of 52% (majority Black).