Try taking both the SAT and ACT again. You could take the SAT again in May, June, August, October, November, and even December, and those test scores will be released before the deadline for completing your application (usually last day of January, unless you have an early application deadline). In the meantime, take plenty of practice tests (Collegeboard.org has a link to Kahn Academy that will help you focus on your weakest areas and it offers practice tests). As you take practice tests, go over your wrong answers to figure out what you're missing and why. You don't want to keep making the same mistakes over again. Ask teachers at your school if they will tutor you or if they know someone who will do that. If you can afford it, try a review course for the ACT and/or SAT. At this point, your grades and scores would probably be too low to be a competitive applicant. If you're struggling in math and hard sciences, see if you can do something over the summer to improve either through community college summer courses or online courses (I think BYU has an online program that some high schools allow you to use for credit) or working with a teacher or student from your school. Academics are a big factor in the application but you also have to be physically fit (CFA test) and have leadership experience, community service activities, and athletic accomplishments. See if you can participate in girls/boys state (it lasts for about a week during the summer b/t junior and senior year). Ask your counselor.