That was in response to the weird dichotomy "Or would it be better to see more people get a basic education up to the age of 16?". Not everyone has the aptitude or the inclination for academic HE study, why bash square pegs into round holes? But you have to have a universally high standard of basic education otherwise there's no way to distinguish egregious talent from what is just a result of enhanced opportunity (this is definitely the problem in the UK at the moment).
Personally I'd turn the whole education system on its head, I reckon much of it is just a demoralising waste of time and a kind of authoritarian preparation for wage-slavery. It's too much too young as well, a sausage-factory education that prepares people for work at 16, rather than giving them more of a chance to develop socially in the presence of adults before formalising their education in their peer-group (something Plato though was best left until the student's early twenties). There'll be no change under capitalism though.