A.C.C. school

UVA

This Virginia university’s founder also drafted the Declaration of Independence.

"A.C.C." stands for the Atlantic Coast Conference, a major college sports league. The clue hints at a well-known school in that conference, and "UVA" is the common abbreviation for the University of Virginia, a longstanding ACC member. The short, informal answer fits the crossword’s style while directly tying to the conference name.