The gym teacher (ML) probably had to report it for safety reasons so that the students would be aware and be more cautious, as in not walking alone...
but why give the name? I can understand the reporting part, but was it necessary to tell the name of the victim? Bad move teacher.
No, I can understand why the teacher told who it was that experienced it, but it was a bad move on the other teachers' parts to spread that information around. That should have remained private between the principal and the gym teacher, as the latter was the witness to the "victim."
When her skirt was stolen, she and the teacher were the only ones there.
How could rumours appear? There were no witnesses.