I was looking at the CSET Test Guide for all the science subtests and saw that there is a Subtest IV for each subject as well. I do not see this option when signing up for the CSET (I'm signed up for I and II - Life Sciences), so I'm confused as to what they are and how to even take them if they're necessary. I'm applying to teaching credential programs and finding out there's another subtest freaked me out, because I have to have all of my CSET tests done by basically this year to be considered for my programs. If there's another science subtest, I don't really know what to do? And since we're on the topic of these subtests, I'll be taking mine soon and would love to hear any tips about the science CSET tests.