The kids school has a policy that if you get attacked and fight back - defending yourself, both kids get suspended. The co-workers kid supposedly didn’t fight back, but was still sent home with a suspension notice.
Most often this is done for safety reasons, to stop anything from escalating the next day, as it often would in many places.
It also gives Admin a time to determine the facts and talk to parents.
To the best of my knowledge doesn't have to go on a kid’s permanent record, doesn’t count as absences and the kid has to be allowed to make up any missing work.
"...if the gentlemen of Virginia shall send us a dozen of their sons, we would take great care in their education, instruct them in all we know, and make men of them." Canasatego 1744
