My son was bullied for years by boys at school. I say contact the school and contact the police.

My son never wanted me to say anything so I keep a close on on him. I am glad I did. One day at school one of his teachers was discussing bullying in class in the context of a book they were reading...she asked if anybody had ever been bullied. My son raised his hand. When she asked how it made him feel he told her felt like he wanted to die. At first she didn't think a whole lot about it thinking it was just an answer not that he really wanted to die...but all night it bothered her so she spoke to him the next day...when he said yes he wanted to die she contacted me immediately. We got him into counseling and worked with him. He had thought about jumping off the bridge where he was going rollerskating most Saturday nights. Gradually things got better with the other kids...it finally completely ended when one day one of the boys was teasing him in class. As the boy went to walk by my son my son put his foot out and the boy tripped...when the kids in class starting screaming at my son for doing it...the teacher turned around and said both of you be nice and walked off....the kid never teased him after that.