The Educational Testing Service (ETS) Test Collection is one of the largest collections of tests in the world, and includes education, business, and health tests from the early 1900s to the present.

For each test, ETS provides information on the author, source, availability, target population, purpose, and scope. ETS gives tests call numbers that start with "TC." Additionally, Test in Microfiche (TIM) can be searched by entering TIM in the Title field.