Not 1 but 2 bullets!!!!
The rest of the students will need psychological counseling for life to overcome this tramatic event. /sarcasm
Actually they might. Not because of the .22 rounds. But because of being subject to such indignities as a personal search, when they had not done anything at all, and no one had done anything truly wrong. No harm was intended, no harm was caused, thus no real crime (malum in se) had been committed.