Administrators at a charter school repeatedly failed to take action after a 7-year-old student was bullied and sexually assaulted by an older classmate to the point that he attempted suicide, the boy’s mother claims in a lawsuit filed Monday.

The boy, identified only as “John” in the lawsuit, first told his mother last November that the 11-year-old boy “made me do something nasty” in the back of a school bus, according to a police report. The boy said he was forced to perform oral sex on the classmate, “J.R.” who warned him, “If you don’t do this, I’m gonna hurt you,” the report said.