TESTS College The majority of four-year colleges require that students submit ACT or SAT scores as part of the application process.  ACT/SAT test scores are just one of the many factors colleges use to decide whether or not to accept an applicant.  All colleges accept both ACT and SAT scores.  You should take the ACT and/or SAT in the spring of your junior year. If you want to improve your scores, you will then have time to retake them.  If you’re applying to a competitive program or college, or applying for a scholarship, having high test scores can be important.  You can retake the ACT and SAT multiple times.  The best way to prepare for the ACT and SAT is to take college prep courses in high school.