phd student kills students

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1. Parkland school shooting victims

   

2. 4 University of Idaho Students Killed in ‘Crime of Passion’

   

3. Photos show teen allegedly disposing of teacher's body

   

4. Video shown in Philip Chism murder trial

   

5. In Rare Mexico School Shooting, Student Kills a Teacher and Wounds

   

6. Police Officer Grabs High School Student