The SAT is a nationally administered, standardized paper-and-pencil test that helps colleges evaluate candidates. Further, the SAT (and/or ACT) is an NCAA eligibility requirement for any high school student athlete who hopes to compete in an NCAA sanctioned sport in college.
Generally, you'll take the SAT for the first time in the spring of your junior year, and scores typically come back in four weeks. This allows you enough time to retake the test during the summer or fall if you're not satisfied with your score.
2019 - 2020 SAT TEST DATES AND REGISTRATION