The teacher may be responsible, sure. The harassment happened; knowing that, it is an absolutely fair question to wonder if more could have been done by the teacher.
> Students have remedies, they all know what they are. I knew. If the child spoke up to a teacher, principal, janitor, or anyone and the school did nothing then I'd side with the OP in a heartbeat.
I feel it must be pointed out, and repeated if necessary, that someone does not need to report a wrong action for that action to be wrong. I know that's not exactly what you said. The author's daughter was harassed, and that is wrong. Full stop.
> Absent any real facts about what happened I'd have to guess (and it's only a guess) that the teacher wasn't the problem here.
If you are absent any real facts, why hazard a guess at all?