Yoooo I live in California... I haven't taken CM but I'm considering taking it, and almost all of my friends have taken it (and around exam time, they would talk about it nonstop lmao). and I've never actually done ABRSM either, and neither have any of my friends (Out of curiosity though, why are you asking this question? )I can't actually answer everything, but I think you will need to buy the syllabi for CM (on MTAC's site) or ask your teacher if he/she has a copy. And as you probably know, ABRSM goes from Grade 1-8 while CM goes from Level 1-10; I'm not really sure how to compare themThe ABRSM syllabus looks a lot more specific (in terms of what pieces you have to play). The CM offers a much wider range of pieces that you can play... (don't quote me on that last one though)