There are two leave weekends a term, either side of half term, and apparently you can have two extra weekends. The leave weekends start on a Friday lunchtime till Sunday 9pm, but the extras are much shorter. You have to collect them after sport and matches on a Saturday (much more like 4pm or later) and have them back Sunday by 9 again. We've only done that once, and probably won't use the other weekend. I know the weekend we did use, all but two of the shells were out, so it must have been quite empty. Probably just chance that the others all chose the same weekend.
I think Saturdays are pretty much taken up with sport, then Sundays they can go into Oxford and have lunch out etc, which they all seem to like. They've just had the school play this week, which sounded good (His Dark Materials, for which the players had a visit from Philip Pullman himself!) and next weekend is the carol service, so we'll see him then I hope. There seem to be quite a lot of trips, which is nice. Looks like a House Christmas Dinner and a school one, which will please him no end as he loves his food. But the best thing about it, for us, is the outstanding pastoral care. You couldn't ask for better, and if a school cares about that, then you can be fairly sure they care about everything else. They won't just have good pastoral, they'll be good in other ways too, which they are. I think if the pastoral care is excellent, you get happy children who rarely get homesick (ours virtually never corresponds and loves it already after less than a term) and who are settled enough to work hard and get the most out of their time at a school. The warden seems very approachable and so do the other top level management staff. There is even a lovely school cat that goes in and out of the admin buildings! In fact, matron has two cats as well in our son's house. Just lovely.