I reviewed all the quizes on here and felt they were all pretty easy. I passed nationals, but I can't say if prep from these quizes helped any. I ended up checking a book out at the library and it was really helpful so I wanted to recommend it. EMT-Basic Review Manual for National Certification. I saw at least two questions in this book that were on nationals. As I am in a pretty progressive state, it also helped me clarify where NR's stand v. my state and what NR considers the standard. Anyway, I just skimmed over the answers before the test, but I felt this book was the best review for nationals that I had found.