I knew it because only few kids in his school

took SAT at 6th grade. At first I told teacher we didn't want kid to take this test and teacher told me this test is for which classes he will go next year. If he doesn't take test he will not be allowed to the best classes. His teacher said it is our resposiblity to prepare kids for this test. I did borrow one book from library and in second practicing test I found his score was much more than his junior high asked and I stoped him practicing. For me I only need him get to the classes. By the way we didn't pay anything and school paid.