Idiotic:

Many students take the SAT more than once, and the College Board automatically sends colleges the scores of every SAT test a student takes.
Under Score Choice [in effect come March], students can choose their best overall SAT sitting to send to colleges, but they will not be able to mix and match scores from different sittings. (Each sitting includes tests in critical reading, mathematics and writing, with a top score of 800 in each area.)

Take it early, take it often. At least as long as you or your parents can pony up $45 each time.