It definitely depends on the person-I've taken tests 19-64 so far-some of them multiple times and I've done all the logic game sections from many earlier tests as well-I plan on taking 65-81 before the sept lsat plus any other tests I can get my hands in-I'm actually working with a deficit of tests-don't see any other way to study, and want to maintain my goal score consistently up to the actual lsat-but depending what you are aiming for, you can get there with less also....