An in-person class can be a great way to learn everything you need to know about the GMAT. Most classes run for several weeks. The instructors for the classes are certified and can offer up a lot of knowledge and experience. Though most test prep centers boast small class sizes, it sometimes helps to have other classmates who can supplement what the instructor says. Additionally, since the classes are not very large, the instructor will provide a certain amount of one-on-one attention.
There are many online resources that can help you study for the GMAT. Online programs offer full-length practice tests and plans that address your personal weaknesses; some programs offer phone or online support if you need extra help. Online programs offer the same information as in-class programs, but they allow you to go at your own pace and study when you have the time. They are perfect for individuals who are working full time or who are parents.
If you are not interested in taking a structured class, a test prep book may be a viable option for you. Many companies, such as Kaplan, Princeton Review, Graduate Management Admission Council and more have published excellent GMAT prep books. These prep books usually contain sample questions (sometimes including questions that were on previous exams), study tips and more. These test prep books are a less expensive option for GMAT preparation. Although there are many books on the market, go with a company that you know has worked for people in the past and can guarantee results.
Personal tutoring is good for an individual who has a specialized learning style or needs extra attention. Many locations that offer classes will also offer tutoring programs for individuals. Personal tutoring may be more expensive than some of the other options; however, scoring well on the GMAT to get into graduate school will help your future more in the long-run. Private tutoring can also be utilized in online programs.