Dennis High School, also known as Dennis Elementary School and Dennis Primary School, is a historic high school building for African-American students located at Bishopville, Lee County, South Carolina. It was built in 1936, and the original L-shaped building is a one-story, load-bearing red brick Colonial Revival style structure that rests on a masonry foundation. Recessed symmetrical wings flank the main block. A third wing, which gave the building its original L-shape, houses the auditorium. A single classroom addition was built in 1954.