I'm assuming the school finds out about these incidents via campus police, who may get info from students. Is your application trying to speed up that process, or provide the ability to report more types of incidents?
What protections to you envision to prevent fake/prank reports? A police officer is easily able to vet a claim and report on its truthfulness.
Do you see your app as a peer-to-peer tool, or as a way for authorities to be able to learn about incidents quicker?