i have just recieved my results :) and although i worried a lot it turns out that infact i did rather well.
i'am only in year 10 in school so my results were all modular but my worst mark was a B so the advice that i would give to parents...not having any experience of course :P is after the exams there is nothing you can do except wait so relax and totally forget about it, even 2 hours before the resualts are released theres no need to worry because whatever hsppens happended when the exams were taken.