RALEIGH, N.C. (AP) — The University of North Carolina's flagship school violated Title IX anti-discrimination law because of the way it handled sexual-assault and harassment complaints, a federal civil rights office has found.

The decision by the U.S. Department of Education's Office for Civil Rights came after an investigation of more than five years into complaints at UNC-Chapel Hill.

The civil-rights officials said they were concerned about whether the school provided "prompt and equitable responses to complaints of sexual harassment and sexual violence, of which it had notice; and, if not,...