I'm a Sophomore in high school, and I did really bad on my PSAT. I really want to good on this test.
So when is a good time to study for the SAT?
The best time to study for the SAT is 5-7 months before the test. Get one of the Official SAT books by college board that has like 10 practice tests. Skim through what each of the sections will look like and at some of the explained examples, then do the practice tests. The best strategy for me was to NOT time myself for a lot of the sections and take an hour or so to do them. Once you get the feeling for it, start timing yourself on each section and see how you do.
The SAT question makers have an entirely different mindset from the general population, and to some extent, the academic population. They are pedants who flip through grammar books to find the exceptions for semicolon usage, sentence arrangement, and punctuation. They are math geeks who devise problems that go against all logical thinking in order to separate the average from the elite. They find words in the dictionary that many English teachers can't define.
For some people they simply adapt instantly to the test and ace it. For the rest of us it simply doesn't work out like that. Luckily, doing copious amounts of practice tests will improve your score, but that's not all you should do.
1. READ - When you read you are subconsciously problem solving, interpreting complex sentence structure and punctuality, and developing a larger vocabulary. Two-thirds of the test are a piece of cake to avid readers because its just another page of book. When they see an odd sentence in the writing section they hone in on it and immediately know that this is the error in the paragraph. When they recognize one of the outrageous vocabulary words they can narrow the answer down to a 50/50 guess. Reading is an intrinsic part to SAT prep and really to being an informed individual.
2. Pre - Calculus - Having done or being in pre calculus the year of the SAT is a monolithic advantage. If you have a good teacher you will probably do a few SAT warm up questions and truly master the parts of Algebra I and II you were unable to in your freshman and sophomore years.
If you are not in Pre-Calc, don't worry! Do ALL of the math problems in the math booklet and go online to the millions of websites that give video or static lessons on Algebra, Geometry, and Algebra II. I don't know if I'm allowed to mention the names of other websites, but Khan academy really is a tool in your SAT prep arsenal. He goes through hard problems and explains things that Algebra I and II kids might not fully understand.
3. SAT classes - If you are able to spend the money on the class, do it. A good SAT teacher has aced the SAT, and will be able to help you on any concept you don't understand. In addition, he or she will have quirky, little tricks on the math section that will go a long way for people that aren't in Pre-Calc.
4. Vocabulary Note Cards - If you start early enough preparing for the SAT, you will have time to substantially build your SAT vocabulary. Any word you hear your teachers say at school, see in a book, or even see on the dictionary.com word of the day venue, write it down on a flashcard. Many words have several similar but distinct definitions; write down all of them. Even words you think you understand pretty well but feel a little ambivalent about, write them down too. SAT test makers love to confuse you with words that you think you know, but you really don't.
The SAT is ambiguous on purpose; somehow they have to separate the intelligent from the genius. It's why you'll consistently get 1-2 analytical reading passage-questions wrong on each of the practice tests. Don't worry about this kind of stuff. Your going to be wrong a lot trying to figure out what these eggheads want, but once you begin to temporarily coincide with their thought process, you're going to wake up that Saturday morning placid, but eager, ready to break that 2000 barrier. Good Luck!