The College Board and the ACT both allow you to use score choice, which means you pick which scores to send to colleges. Here is a quick break down:
ACT/SAT. You can choose which tests to send by test date. You have to send all sections from that date.
AP/SAT II. You have to send all attempts at the tests you send. You do not have to send all subjects you have taken.
Each school has its own policy about how they use scores. Some schools require that you send all scores, despite the testing agency policies. You should check with each school before sending a score.
SuperScoring is taking the highest section score across all the times you have taken the ACT or SAT. For example, if you received a Critical Reading score of 720, Math score of 740, and Writing score of 690 on take one, and a 700, 730, and 720 respectively on take two, you would have a SuperScore of 720, 740, and 720. This shows your best total score across all sittings.
