Having worked with hundreds of test-takers on standardized exams over the years, I have tutored students of all abilities and levels of commitment to their studies. Most students want to know how many hours of tutoring are necessary to achieve the results they desire. While there is no single number of hours uniformly required for all students, for all exams, I do recommend as a rule of thumb that you spend as many hours working on your own as you have spent working with your tutor. To maximize the benefit of working with a tutor for a standardized test, it is necessary to implement, and then practice, the strategies you've learned on your own. Ideally, a student matches the time spent studying independently hour for hour with the time spent tutoring (similarly, university courses typically advise a minimum of one hour of study for every hour spent in class). It is to your advantage to meet with your tutor frequently, and early, enough that the tools you acquire to succeed on your exam are mastered in such a way as to be like second nature. A great tutor will invariably make problems seem easy while you are working with her; the best tutor will work to ensure that you are able to effectively and efficiently replicate those results when you ultimately take the test without her.