Steven Devlin was the school's vice provost when he was arrested last summer. He was charged with trying to arrange a sexual tryst with two young girls and a woman he thought was their mother.
Devlin was actually chatting online with a Delaware County detective.
The 50-year-old Bryn Mawr resident pleaded guilty Monday to criminal attempt to commit involuntary deviant sexual intercourse.
Devlin no longer works for the university in Bethlehem. He is scheduled to be sentenced Aug. 11.
