Prom not really on DS1's radar. I've ordered a ticket, in case he'd like to go. If he does decide he wants to go, then we'll buy him a suit a week or two before, then he can wear it to school in September if it still fits (and if he gets the grades for sixth form).
He has been revising fairly regularly this week (esp Maths, Chemistry, Biology) and not going out as much as he usually would. Next week he has been invited to three parties, so I think he's saving his down time for that.
We finally bought him his own laptop this week (he contributed some of the cost). This means that the shared family computers are less stretched, which means that he can do Tassomai and CSCP activities in peace.