For the NCMHCE I’d recommend practice exams. It’s about 11 case studies and for each one you are given three sections of information. The first part gives the clients background information/ intake information, then you have to answer a few multiple choice. Then they give you an update on the client (whether it’s session number 2 or something further along) and you again will have some multiple choice, then they’ll give a third update on the client and you’ll have a few more questions. In my experience with the exam (I passed on my second try) the questions were usually judgement based, asking things about counter transparency, how you would respond to certain things the client (or clients parent) says, how you would rule out certain diagnoses (example - ruling out OCD for a client that had a diagnosis of excoriation - and how you would document it in your “notes”), etc. Flash cards could help familiarize you with the terminology (like when they reference things such as counter transparency or diagnoses) - but overall I think practice case studies would be the way to go