Taking the SAT early in senior year is generally acceptable, but it poses risks regarding college applications. It's advisable to take the SAT at least once during junior year to allow for a retake if needed. Many colleges accept scores from tests taken as late as December, but submitting scores by early January is crucial for timely consideration. Students are encouraged to complete SAT I during junior year and then take SAT II subject tests in senior year, ideally in October, to avoid stress and ensure scores are reported on time. Some colleges have rolling admissions, making early applications advantageous. Taking the ACT before the SAT can also be a strategic choice, as students can choose which scores to submit. Overall, completing standardized tests earlier provides more flexibility and reduces pressure during the busy senior year.