I know school's not over yet, but you may as well start thinking about the summer. If you haven't already got summer plans, or if you need to reconsider your summer plans, here are some suggestions for things you can do to prepare for 11th grade--which is usually considered the toughest grade--and beyond.
The best way to prepare for college is to be a good high school student, and there may be no more important semester of high school--as far as college planning is concerned--than this semester. When admissions counselors look at you transcript next fall, this semester is the most recent and full picture they have. While they'll look at all your grades and activities, the junior year is more important. It lets them see how you perform in more rigorous classes and more leadership roles than you're likely to have in the 9th and 10th grade.