There's a scene in the 1979 film Scum (https://www.imdb.com/title/tt0079871/?ref_=nv_sr_srsg_0) where one of the warders in a young offenders' institution allows a bullied inmate to be framed by his peers and punishes him.

When I saw that (not long after it was released) I thought how well that captured the spirit of many school interactions, where bullies would blame their victim and the teachers would fall for it.