Help!! Freaking out over natural science clep

[Scholar Interrupted]

Peterson's tests are almost always much harder than the real thing, but a score of less than about 60% on one would still give me pause. (I've taken the Nat Sci CLEP but didn't use Peterson's for it.) The CLEP practice questions are usually a good indicator of the type of material covered on the test and in what proportions, but often, the practice questions average out to be easier than the real thing.

You might benefit from taking a different practice test. If you can get your hands on an REA book (what I used), the drill questions in it are probably more on target than Peterson's. Kaplan also has a book which, IIRC, contains full-length practice tests.

Keep studying, and good luck!