You could potentially report the attack to the police: assault and battery is a crime. Since the student is a juvenille, the authorities may or may not take action which you believe appropriate or fair--but you do have the right to report an attack.If you suffered significant injury or incurred medical costs due to the attack, you could sue to recover monetary compensation--the student's parents are responsible for his or her intentional bad acts. However, the civil legal system only provides compensation for actual injuries or costs, so if you are basically unhurt, there is no point in suing.If you are public school teacher, check your union/collective bargaining contract to see what rights you may have vis-a-vis your school in a case like this.