I think it's a hit/miss thing with kingsley. Ie; you study the part he tests and get good marks. you study the wrong thing and u screw up.
All in all though, his exams are relatively easy. not too difficult (pending on which course you're taking though. I took FINS3616 with Kingsley and got 72 with minimal studying)
he is a bit of a wanker when it comes to exams. i did wealth last semester with kingsley. he asks obscure questions. he tested us on the RG146 document last semester.
just remember that if you dont pass this semester...theres always next semester...
but he does ask obscure questions, for acf, he tested an extended response on one slide that no-one took notice of, even the tutors said that it was a weird question
our WM midsem this semester (s1, 09) was really really easy... but the marks weren't so great. he said he aims for average mark of <70% even if it seems easy. hopefully the final won't be too bad.