Clep Study Guides useful for Straighterline Courses?

[bhome83]

Does anyone know if the Clep study guides are useful for straighterline courses? I am taking 4 social studies SL courses (US history 1 and 2, history civilization 1 and american govt.). My school is giving me credit for the 4 classes so I don't have to pay (just the $100 monthly charge) so I'm going with SL over Clep. I need a 70% in each course for credit so unsure if studying the Clep study guides would help get me there, or would I need to read the entire textbooks.

Thanks guys for the help.