Questions on Biology Clep-peterson test

[BabyTex]

I did one test last week and score 41%. After a week intensive studying, I took the second test and only score 42%( I didn't have time to finish all the question, and I have 7 question unanswered). Also, I found the second test is much hard than the first one.
I am taking the test on June 28th, a week from now, so my question is that how I am going to study in order to pass the test? Do I need to reschedule my test? Maybe I need another two weeks to study?

The study recourse I am using now:
REA,Biology Smart, official test, Cliff notes, standard deviant dvd.

I studied for 2 months, finished about 10 minutes early and scored a 74. I scored 70% and higher on every Peterson's CLEP test, so if I were you I would continue studying. I would say that you should get at least a 60% before you take the real one. The Peteron's CLEP for the biology CLEP is a great practice, but the real one is more difficult. I think if you spend a lot of time studying every day for at least a week you should be good. BTW is ur Cliff notes AP? If not go out right now and get the AP Cliff notes for Biology that was the best thing I ever did. I only studied from that and I did well. It is the best resource and right on the money!