My DS3 says he is leaving school after GCSEs so we've told him he'll have to work. Also DS1 will be coming home from uni and if he works FT at his Sat job he will take home about £200 a week (which he will spend rather than save).
We haven't taken money off any of the DCs up to now because I thought they needed every penny for uni, but (a) they spend like it's going out of fashion and (b) DS1 won't be going back.
I used to pay my mum quite a lot but a friend's 19 yo only gives her £10 a week out of £200
Is 1/3 save/ 1/3 spend/ 1/3 board reasonable? That would give DS1 about £60-70 a week to spend. (we provide all lifts and all food)