A Massachusetts teenager who raped and killed his high school math teacher "knew right from wrong and could choose right from wrong," a prosecutor said Monday during closing arguments in the teen's ...

Jury selection in the trial of a Massachusetts teen accused of raping and killing his high-school teacher has been halted amid concerns about his mental competency. Philip Chism, 16, is accused of ...

BOSTON (AP) — One day in the fall of 2013, Colleen Ritzer asked one of her 9th-grade algebra students to stay after school. Hours later, the body of the popular, 24-year-old teacher was found in ...