> Getting a high score is about knowing how to take the test, and this is learned by taking it many times.
This is silly. One way to learn to get a high score is to take the damn thing many times and waste hundreds of hours. The other way is to have a rich life full of deep conversations, lots of reading and writing, play with various sorts of puzzles and games, schoolwork taken seriously, real extracurricular projects, etc.
About half of the people I know who got above 1500 on the SAT, including a few who aced it, never studied for it explicitly, beyond a couple of practice tests given directly by their public high schools.