frumnotyeshivish,
The LSAT is an intelligence test. However you can learn how to take the test and improve your score a great deal (I know someone who improved themselves from approximately the 65th percentile to the 95th) and most people over time substantially improve their score.
I suspect that the same phenomenon would occur if people took any intelligence test numerous times and/or read books that explain how to take the test.
This doesn’t mean that the person became more intelligent, it just means that they learnt how to defeat the test such that it is no longer measuring intelligence (and therefore the test is no longer testing “intelligence”).