It was only a wee joke. But saying that the teachers I know which is about 3 seem to love it and get paid well.  None of them work for private schools.  Saying that though that's 3 out of thousands. So I appreciate that's not the case for most.

Also I was a college tutor in my 20s.  Teaching part of the Sound Production b-tec. But I'm not sure that parallels to secondary or primary school teaching