Yes, talk to the teachers on how they can ensure that no student is bullied at school. It is their responsibility to discipline each student so no one among then will be bullied. For the kid, talk to him in a manner that he would not lose his self-esteem. Give him encouragement and teach him how to defend himself whenever someone tries to bully him. Also tell the child to call the teacher's attention immediately if this happens again.
Magbasa pa