Delmar High School is a public high school in Delmar, a community in Sussex County, Delaware. The school is co-located with Delmar Middle School, along with the district offices. Delmar High School's enrollment includes students from Delmar, Maryland and 45 students from other cities under Delaware's School Choice program. The total 2008-2009 high school enrollment was 640 students, and 501 students in the middle school, with 1,141 students in the district in total.