Let's see, the rough explantion of UK schooling is if it's the 4-16 age school years, it breaks down to about 2-3 weeks off over Christmas, 6 week long half terms, a one week "half-term" break, 2-3 weeks off over easter, and 6 weeks for summer (usually consisting of the last week of july, the whole of august, and the first week of September).
Then throw in various Bank Holidays, a handful of teacher training days, may day, and a couple of national holidays scattered around the school year.