I have two daughters as you know doug....I am not sure what point you are trying to make.
If it was a teacher doing this with my daughter, I would have rearranged his bollocks and he would have ended up wearing them as earrings.
As part of my classics degree, we studied in depth Greek and roman society. Boys as young as 8 were offered to wealthy aristocrats as exchange for influence and social mobility by their parents. Girls not so much!
Maybe doug's attitude belongs in this period, ie 700 bce! Time for you to back...
The thing is it was not a moment of weakness though! It went on for ages. As a former school governor, I would be most concerned that the school did bugger all to nip this in the bud and this was not an isolated case from this particular school.
He should not have encouraged her...simple as...