To be honest, If my parents were average earners I wouldn't have gone to Uni.
As it is we are technically classified as poor, earning under £13k a year or something, so the Government pays all my tuition fee's (£3k a year) and gives me a £4k loan a year which has to be payed back and a £1.5k grant which doesnt.
Good thing about paying it back in the UK is its automatically taken out of your wage (or something) and scales with what you earn. Earn a lot it takes more out, earn a little it takes less. If you're 60 then it get cancelled.