1,000 times this!! Education is so much broader then just A's and B's in Maths, it's a preparation for life.
I don't know if I agree with you there.
There are certain subjects that are key. I agree it's not all about exam results. However basic maths and English skills are required of everybody, and many kids are not leaving school with enough ability.
I put figures into a calculator and I know what the answer should be, roughly, before I see it on screen. Or at least if it's a factor of 100 out I'll realise. Younger people lack that ability.
So yes it is much broader, but that argument seems to be the one which would be used to have the less sharp kids doing woodwork when the rest of them are learning what an interest rate is.