I am like you. I want to do well, but I don't expect to ace the test either. Remember the test is one-on-one. You are not competing with anyone else. Well, you are competing with the other applicants, but the test is you and the CAT. Keep your head straight, and you will be fine.
The school I am considering wants above 60%, so their expectations are not too high, but I am very limited as to where I can apply by location since I can't move my family and spouse.
Anyway, I found the information on the school's website. You might want to search the website and see if you can find it. If not, give them a call!