The Big Test
The earlier you begin preparations for the SAT and ACT, the more opportunities you'll have to improve your score. Taking the test in your junior year, or early in your senior year will provide time to retake the test as many times as you need to hit that perfect score. Also, many schools offering early admissions begin accepting applications in the fall, so perfecting your test score early in the year can improve your chances of getting into the school of your choice.