Idk, I don’t remember touching my friends butts in middle school. That sounds like textbook inappropriate. They should be preparing the students by teaching them that that type of behavior isn’t allowed in the real world. If I touched a coworkers butt after they told me to stop I would be fired and/or arrested. I think a phone call home is an entirely appropriate response. Sounds like you’re the type of idiot parent all these other posts are referring to.