Your first priority (by far) should be to earn the highest scores you can, in whatever subjects you can. As a good rule of thumb, Ivy League schools, and schools of comparable academic rigor, strongly suggest students take them. Chemistry or physics (depending on the school) are popular options. Should I take SAT Subject tests? (Adapted from answer to Do some SAT Subject Tests look better for college admissions than others?) Prepare With An Expert . You are allowed to take up to 3 subject tests on each SAT subject test date. During a specific test date, you may be able to take multiple Subject Tests, but this is not a requirement. Sophomore year is an excellent time to take the SAT IIs even if you aren’t in AP classes. You will need to learn a few test tricks, like how to avoid the guessing penalty and pacing yourself for the hour, but most of your prep should focus on learning or reviewing the content. And homeschooled applicants at a variety of institutions are often required to take two or three Subject Tests, too. Well, that depends on what schools you are applying to! Stanford has softened its policy from recommended to considered. Take the June SAT II so that you don’t have to duplicate studying efforts. They recommend, but do not require, the submission of two SAT Subject Tests of the student’s choice. If you’re enjoying particular APs, you should take the SAT II in that subject. Should you want to attend MIT, however, you must take one math and one science SAT Subject Test to qualify for admission. Brown University requires the SAT with writing or the ACT with writing. Test flexible schools will allow you to submit scores for the SAT or ACT, OR a different test in their place (such as a SAT Subject Test or AP test). While the SAT subject tests won’t take the place of the ACT or SAT, they enable students who may have earned a less-than-stellar grade on the Reading and Writing portion of the SAT to show they have special skills in other areas. You should note that these are not offered at the same time as the SAT test–you cannot take the SAT and SAT subject tests on the same day. Unlike the SAT and ACT exams, which in part test critical thinking skills and your ability to use tricks on the test, the Subject Tests are almost entirely about how much you know in the subject area. Dartmouth requires any two SAT Subjects Tests. Okay, so now what? You can take one, two, or three tests of your choosing on the same day. Some schools require SAT subject tests (a list of which will be provided in a link at the bottom of this paragraph) while others just encourage them. If submitted, the school will take SAT or ACT scores into consideration but may focus on other parts of the application more. If there is any doubt, you should take two Subject Tests.” Updates for the class of 2018. Now that you know if you should take SAT Subject Tests, it’s time to prepare. You can take multiple tests.