I realize circumstances in some schools today differ greatly from the early '70s when I was in high school, but if I were the victim of a crime, I sure as hell wouldn't let the administrators keep me from reporting it to the police.
On the other hand, one time a kid in one of my classes was questioned by school officials and the police about his whereabouts during the last week outside of school - and they wouldn't tell him why. ("WE'RE THE ONES ASKING THE QUESTIONS, NOT YOU!!!")
He shut his pie hole and despite their threats he flatly refused to talk without a parent and a lawyer present - he knew his rights as a minor. Cop and school officials weren't happy, but after some verbal browbeating, he was sent back to class. I talked to him a couple of weeks later and I understand his father really read the riot act to the principal about questioning a minor without a parent present. Nothing more came of it, and they never found out for sure what it was all about. The kid guessed that something was stolen or vandalized after school hours, but that was only a guess. (Kid wasn't a known troublemaker.)