Just to reiterate what the core problem with GAC is here in mainland China - the students who end up studying GAC do so primarily because of their parents' ability to pay the high tuition fees rather than because of being intelligent and diligent enough to pass this stringent pre-university set of modules that includes continuous assessment! Sadly, many course takers turn out to be unfit academically, or are not diligent enough, to study GAC well. Academic fraud is practised routinely by many GAC/ACT centers in China to pass students who should be failed. The Chinese providers' first priority is to make money, so those centers will let as many students as possible participate, even those who have failed the GAC pre-test, in order to maximise profits, and expect their foreign teacher facilitators to falsify grades and perform other dirty deeds so that all students pass. It is indeed a filthy scam motivated by financial greed. Foreign teachers who wish to preserve their integrity should avoid applying for teaching posts at GAC/ACT centers on mainland.