We are the northern-most district in Delaware, covering 33 square miles of New Castle County, including a portion of the City of Wilmington, Claymont, Brandywine Hundred, Bellefonte, and Arden. BSD schools remain very popular for students and families who take advantage of the state’s School Choice program. We are proud of our schools and we know they have a great deal to offer your family. We are... 16 Great Schools - 1 Strong Community.