Are you about to start your senior year of high school? If so, you may be wondering whether you are on track for college next year. To make sure that you are organized, read through the following checklist — AKA the Summer Action Plan for high school seniors. (And, if you need even more help with getting organized, be sure to keep your eyes peeled for the Fall Action Plan for High School Seniors coming in September!) 1. Take the ACT or SAT Hopefully you already did this last spring, but if not, there is still time. Sign up now, and start studying. The next SAT test is October 10, 2009, but you must register by September 9. The next ACT test is September 12, with a registration deadline of August 7.  If you’re not sure which test to take (or whether you need to take both of t...