In order to enter a university or college in the United States, certain tests are required. Although the tests may differ from one institution to the next, many of the test types are standardized and may be taken in test centers located all over the world. Once an applicant has decided on an institution, it is essential to find out which tests are required. This information is usually available on the institution's web site.
In addition to U.S. universities, certain other organizations in the United States, Canada, and other countries base their selection of students and employees on these tests.
TOEFL: Test of English as a Foreign Language
GRE: Graduate Record Examinations, a general test measuring verbal, quantitative, and analytical reasoning skills and often required when applying for graduate studies in the United States
USMLE: United States Medical Licensing Examination, a test for obtaining medical licensure
GED: U.S. high school diploma equivalency test