DS drove to school today with dd in car, he parked on road by school where most staff and students park. as they were exiting the car another car was parking behind them. DS and a friend think it was a certain teacher from the school, DD not sure. When DS went to come home at lunch time, other car was still there, our car has big grazed area on outside corner, car parked behind had grazed area with paint on inner front wing. Pretty obvious that she damaged both cars while parking hers. He has pictures of damage and location of both cars and reg. She had left no contact details on the car. Its quite a lot of damage, several hundreds I would imagine. Should I contact school first and see if a member of staff or shoukl I report to police tonight? If you report online, does this come under criminal damage (only category I can find), any advice appreciated.