February 26, 2016 5:40 pm Philip Chism to Serve Life in Prison With Chance for Parole for Murder of Colleen Ritzer Philip Chism, a teenager who raped and killed his high school math teacher, has been sentenced to life in prison. US & World Videos 6:03 Tensions rise during campus protests at MIT and Harvard 6:19 Police surround pro-Palestinian encampment at MIT 5:12 Karen Read's defense pushes the question of credibility 2:58 Karen Read trial: Defense accuses prosecution witness of perjury 2:24 Gov. Maura Healey reacts to Steward bankruptcy filing