LaVolcan - the issue of teacher training has long been a mess and I think still is.
When I was a lad there was a distinct divide in many grammar schools ( and to an extent this still exists in education now). Those who were most able would go to university. Those who were not were allocated teacher training. That was after the bunch who left at 16 with little or no O levels were off scene. Of course there wereexceptions - some left with good clutches of O levels. Others came from SM and wereautomatically lumped intoteacher training groups ( I was one and it was the only time in my life I rebelled).
Equally for many years teacher training was not graduate. Again when I was taking A levels it was a certificate course and those who did it needed one A level usually but 5 O levels was still the entry requirement.
Then there were graduates who could enter teaching without any further qualifications. Those graduates and the cert eds were all given QTS if they were working in schools in 1989 and had started teaching before that.
Strange as it may seem 5 O levels including maths and English language is still on the statute books as the entry qualification for teaching. Variations in statutory instruments have not changed it despite the "all graduate" thing. .
It is a muggers buddle . Quite how you sort it out, I dont know. Those teachers who have a cert ed these days would have to be around my age or maybe a couple of years younger or possibly even more .... I am not sure exactly when Cert Ed was were phased out. It was phased and that is the problem. In some colleges it may have carried on longer than in others. I will take a guess - some of those old cogers who should have been " weeded out" according to you may be around 54+ now.
There was a programme to upgrade them to degrees in the 1980's but it was a further course and many didnt bother to take it. Some got OU degrees. Latterly some of the old teaching colleges have actually awarded without further ado a degree to those with that old cert ed - so if you have hung around long enough your cert has become a degree and you can apply for the bit of paper.
Over the years things didnt improve.I have net a number of teachers whotell me they never took O levels or GCSE or A levels but they are trained and qualified teachers ( BEd or subject degree and PGCE - QTS). How they did it I dont know. Most were mature entrants to teaching . I guess some kind of access to HE course?
I dont want to generalise about standards though. Some of those old cert eds might knock spots off the more recently graduated! I know several older teachers (around my age) who are not to be tangled with academically or in terms of classroom management.
But it still remains that you can enter ITT at 18 for a B Ed or a BA ( QTS) with lower grades than you can a subject degree.