The third and second sets of remains have been idenfied through DNA . the University of South Florida , Tallahassee , closed in 1900 . About 50 unmarked graves have been found on the school grounds . Researchers are trying to locate and identify remains of students .
The second and third sets of remains have been idenfied through DNA . The Dozier School for Boys in Marianna , Florida , closed in 2011 . About 50 unmarked graves have been found on the school grounds . Researchers are trying to locate and identify remains of students .