How much time does it take to recheck as level papers!!?

This As -level examinations sucked totally., i cannot believe , i got 3 U's and 1b n 1 e, ..Not only that, the whole school , cie students failed , nobody believed that , this was even possible, i expected A's n B's but how come n whole school, cannot believe , can there be any checking error or something , because , not only m eall the students did their best...And the fees also..Ans Somebody recommend me that should I change the board or continue reappearing for As level exams.. Help needed. really in shock..