Top students seldom gain much from coaching. The effortless insight that marks the best standardized test-takers cannot be taught. On the other hand, a student who lacks motivation may not benefit from a SAT prep course either. For diligent students, the benefits from a prep course will vary. If you are the type who is well-organized and initiative, you’d probably do as well with self-coaching software and books.
If you are enthusiastic about a prep course, by all means, take up one. If you believe that a prep course will raise your score, chances are that it will. Other types of students who may benefit from a prep course include students who learn best with adult direction. They often need help in staying focused, so a prep course will be a good idea. It depends on how you learn.
Before you sign up for a test prep course, be sure you research thoroughly what exactly you will be taught. Meet the instructor firsthand. Don’t pay too much attention to guarantees; they are not reliable indicator of how effective a particular course is. It’s always a good idea to try to take up a prep course BEFORE the first time you take the SAT. That way you’ll avoid a sudden spike in your score – an event likely to raise suspicions in the admissions offices – which is the result of a cram course.