"I have no idea what to expect" is not a sentence you want running through your mind on your way to take the SAT or ACT. If you take control of your test prep and schedule, then you shouldn't have any surprises on test day.
Besides studying, part of your preparation should be strategically planning out your SAT/ACT test dates. Instead of closing your eyes and pointing randomly at a calendar, you can ask yourself some key questions to figure out when the best SAT/ACT test dates are for you.
The first question that every student should ask herself, of course, is, When are my college deadlines?