Does a diverse student body matter to a school? Has there been any study on its effectiveness at changing attitudes among students? OK, a study at long last a study has looked at this question and determined, that yes, “Children’s racial attitudes may be related to ethnic composition of their school”:

“These findings inform our knowledge about the role that contact with members of different ethnic and racial groups plays in children’s intergroup attitudes,” said Dr. Killen. “This contact, under the right conditions, can foster positive attitudes towards ‘outgroup’ members.”

At last, school diversity has a leg to stand on. With only 138 subjects I’m not saying the study is definitive, but at least this question is starting to be addressed.