1. If those students have reached the age of 16, they should bear criminal responsibility for intentional injury.
2. If the school is at fault, it shall also bear corresponding civil liabilities.
3. Go to the public security organ to report the case first, and pay attention to retaining relevant evidence.
4. After the public prosecution, you can also file a criminal incidental civil action to demand compensation from the hitter.
5. It is recommended to hire a professional lawyer to better protect rights.
I hope I can help you!