lol, really i think there is absolutely too much hype about his SC..as many "professionals" have told me....the SC means S*(&T all. Mmm, we're one of the few states that still have this type of external exams in YR 10!
Have F U N in the holidays...if u really feel like studying....i think ur best bet would be to not to!lol, nah read inroductory stuff to preliminary courses....cos hey....(im in yr 10 too) but if u want to sound like ur've got a good clue about what's going on from the start, lol and if you want to get some pschylogical edge over ur other classmates steam through the introductory stuff...learn ur periodic table, logarithms..omal, and astound the masses!