Test fees vary by program. It is recommended that you first used the practice material included in most test bulletins before you determine what additional test preparation you may need. In addition to the practice material included in most test bulletins, a variety of test preparation materials are available for purchase directly from the testing companies during registration, on the Websites, at local bookstores, participating USIS offices, and educational advising and bi-national centers. Test preparation materials produced by commercial publishers are also available at bookstores. Additionally, many local educational institutions, American schools, and English-language schools offer test preparation courses, ad do commercial test preparation companies.
Courses usually involve a book and practice tests as well as classroom instruction.
For some computerized tests, like GMAT, you can make an appointment to visit a testing site and take a practice for a fee. If you score poorly on a test, you can take the test again. Some tests send out all previous scores on a score report to an institution, but some do not. You can find out the score reporting policy for the test you are taking and if it is possible to cancel a poor score. Some schools average all your scores, some look at just the highest score, and some look at the most recent.