" I'm not sure I'd want my children being taught Further Math A level by somebody with a third class degrees from No-Hope Uni (ex Poly)."
My senior school maths teacher had Maths degrees, masters and Phds coming out of her ears. Without a doubt an absolutely incredible mathematician.
She couldn't teach for toffee.
On the subject in question - I don't see the point of this exercise. DS2's infant school already has teacher qualifications (just "BA (Hons)", PGCE, BSc(Hones) type information - nothing more) - but nothing about how good their degree was, or where from). But I can't say I've ever sat and studied it
And tbh I'm not sure I'd know which was "better" anyhow
.
I have no desire to know what sort of salary scale they're on, or how much time they've taken off sick. I know all I need to know - and that's that my children are being taught well at school, an that if a teacher is off sick there is a system in place to minimise disruption to the children.