I think it cuts both ways
and depends heavily on what you're teaching

If you're doing primary school, it's probably more important to have a detailed understanding of child development and how kids learn than it is to have, for example, an in-depth knowledge of Chemistry attained by four years' study at University.

On the other hand, if you're teaching A level Chemistry....
(SnowyTheWereRabbit the Leporid from Hell, Thu 15 Jul 2010, 11:30, 1 reply)

Equally
I don't particularly like the idea that someone is teaching a subject just to get a golden hello, but as needs must, I suppose.
( SigmaX0 Dear Die Hard. You rock!, Thu 15 Jul 2010, 12:11, closed)

I think it's something to do with not being able to recruit teachers
as all kids are such spoilt, violent little shits, protected by simpering, idiot parents and their simpering, idiot social workers.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Thu 15 Jul 2010, 12:21, closed)