Philip Davis is charged with attempting to kill a youth services worker . Teen accused of killing the female employee in the cafeteria . He is charged with raping and murdering his algebra teacher . He has pleaded not guilty to aggravated rape , assault , murder charges .
Philip Chism is charged with attempting to kill a youth services worker . Teen accused of attacking the female employee in the bathroom . He is charged with raping and killing his algebra teacher . He has pleaded not guilty to aggravated rape , robbery , murder charges .