Kaplan Test Prep and Admissions offers GMAT preparation classes and guarantees that you will get a higher score on your GMAT test after their training. If you don't, you get your money back. According to the Kaplan website, more people get into business school who take their training as compared to any other training program. They offer a variety of delivery methods as well. You can take classes online anytime by watching taped teaching sessions and taking GMAT practice tests that adapt to your level of expertise. These classes start at $449 as of November 2010, and can be paid in three installments. If you prefer live interaction with an instructor, you can attend class online where you have access to your teacher and are able to interact with others preparing for the GMAT. This option starts at $649 as of November 2010, and can be paid in three installments. The most expensive option from Kaplan is their personalized "GMAT Classroom On Site," in which a teacher makes arrangements to come to a classroom close to you, allowing face-to-face interaction with your instructor. This option starts at $1549 and can be paid in three installments.
Knewton Gmat Test Prep offers classes exclusively online, and guarantees a 50-point increase on your prior GMAT score or your money back. Knewton offers you the choice of attending an interactive class live, where you can chat with your teachers and classmates and get one-on-one help, or an on-demand class feature, where you can watch pre-recorded classes and get help as needed via the online chat features. Each student has a group of teaching assistants as well as a teacher to turn to with questions, and each student is individually assessed when they start class, and as they progress, to see which areas they may need more instruction. Knewton's classes are $690 per session as of November 2010, which includes 36 hours of live instruction, five fully adaptive practice tests, 1 year of continued support when you need it and access to over 3400 practice test questions. If you ever have questions, Knewton also guarantees that a teacher will personally answer you within 24 hours.
Manhattan GMAT is taught only by instructors who scored in the 99th percentile of the GMAT, have extensive teaching experience, and who have over 100 hours of training specifically in teaching the Manhattan GMAT curriculum. Manhattan GMAT generally attracts those students wanting to attend a top-tier school and is one of the pricier options, with classes starting at $1490 as of November 2010. Classes are offered in many cities throughout the United States and in limited cities internationally. Additionally, Manhattan GMAT recently introduced a non-session live online class that meets once a week for 10 weeks. You also have the option of scheduling a 30-minute session, once per week in addition to your class, with your instructor in person or by phone.