Hi my company gave me STC to prepare the 57. May I know what year you were preparing 57 by STC? I wonder if it updated already? If STC is still not up to date, I'll buy Knopman by myself. Thanks! -------replay to------- I just took my exam after studying with STC daily for about 6 hrs a day for a month; scored over 90% on all my practice exams and failed.