So 15 year old ds is half way through GCSE's, appears to be doing very little in the way of revision. he was meant to attend a half day English revision session this morning but overslept. He has only just got out of bed at 3pm claiming he is tired! I just can't seem to get through to him how important this is, he only has to put the effort in for a couple more weeks and then has months off school. Anyone else having the same problem and advise on how best to handle it?