All four-year colleges or universities will accept EITHER the SAT or ACT test results for admission. The ACT is more of a memory test, rather than a reasoning test like the SAT. The SAT consists of writing, critical reading and math. The ACT tests more about what you know. It includes a 40 question science reasoning section, covers English grammar, and includes some trigonometry. It is advised that students planning on majoring in a field related to math and/or science also take the ACT.