I am doing the CNS practice tests at CNScoreprep.com. So far, I've done 2 and I scored 310 on each one, which isn't a high enough score to pass the ACNS certification exam. Did anyone do these practice tests and then take the ACNS cert exam? Did you pass? I guess I'm trying to find out how indicative the scores on the practice tests are in relation to success (or failure) of the real test. I take mine in a week......and now I'm getting worried that I don't know enough!! Thanks.