1 if no immediate danger/2 if there is: Take whatever evidence there is that it has happened and keep it safe.
2 if no immediate danger/1 if there is:
Report to the nearest authorities if there is an immediate threat/danger/especially if something has already happened.
3. Get some support from a person in your life you trust, someone who’s supportive, someone who makes sure you're ok.
4. If it happened online, make sure it is reported to whoever and whatever it involves, if it is by another student or staff, report to the school.
5. Seek support from others such as a counselor/therapist if there is mental effects still from it.