Accusations are flying that teachers and administrators at James Conant High School in Hoffman Estates swore at students and even used excessive force after a senior prank.

Four students were arrested as a consequence of the prank. Others will miss prom and graduation.

As WBBM Newsradio’s Steve Miller and Mike Krauser report, everyone agrees on the fact that the seniors were warned against committing any pranks.

But some seniors at Conant went on with it anyway. The students who organized is say the idea was to spray the hallways with silly string and throw glitter everywhere, but the scene ended up turning into a mosh pit.

Video of the prank shows a hallway packed with students cheering and throwing glitter. Some of the students are wearing Mardi Gras masks, and many are seen taking video with their iPhones.