Is it for JLPT exams?
Or MOELC?
I'm not too sure about MOELC's style of exams but I'm very sure it's quite different since JLPT is all MCQs...
Ikoma's preparatory courses are quite comprehensive for JLPT exams.
They provide lots of notes and also practice with the tys quite a bit. They allow students to loan listening cds too!
JCS also conduct their own prep classes but I feel that Ikoma's classes are a lot better. Well, cost wise, Ikoma is more expensive. It's really 一分钱,一分货... Loosely translated it means you pay for what you get. Pay peanuts and get monkeys kind..
I started out as a JCS student and finished all their courses... they only offer until Further Advance when I was still studying Japanese. Went to Ikoma for their prep classes for my JLPT exams though.. =x