Definitely ask... At our place, we go back for thsoe 3 weeks but find that so many students take that time off, that I don't teach anything too important, because so many students aren't there. If I did anything major then I would have to reteach it again. So I tend to do a more general background info bit. Incidentally, we have students absent from those classes for a variety of reasons... Fast trackers (students who do the course in a year) don't start until Sept, so they'll be missing, students who go on holiday at that time, Students who think they are going to drop the subject, but then get great results and pick it up again in Sept... most years I do only teach about 1/2 class during those 3 weeks, so I never teach anything major that can't be caught up with private study. But, other people will be different. The only way you'll know is if you ask your child's teachers!