The CBEST is the easiest of all the teaching tests you will take. The best advice for the CSET is to get those homework help books for grades 3-6. The history, science and social science is mostly 4-6th grade material. (That is if you are just getting your multiple subject credential.)
CBEST and CSET testing taking classes are helpful. Just remember to answer the questions without babbling. They are looking for straight forward answers on the essays.
Good luck!!!

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