Chism , 14 at the time , used a box cutter he had taken to school to kill Ritzer , 24 , in October 2013 in a girls ' bathroom at Danvers High School , police and prosecutors said . Philip Smith , 15 , accused of attempted murder in attack on youth social worker . In another case , teen is charged in assault and killing of algebra teacher Colleen Ritzer . Police lay out narrative of what they believe was ` ` the defendant 's intent to murder ''
Philip Smith , 15 , accused of attempted murder in attack on youth social worker . In another case , teen is charged in assault and killing of algebra teacher Colleen Ritzer . Police lay out narrative of what they believe was ` ` the defendant 's intent to murder ''