SAT Subject Tests are 20 multiple-choice standardized tests given by The College Board on individual subjects. They are usually taken to improve a student's credentials for admission to colleges in the United States.
Many colleges use the SAT Subject Tests for admission, course placement, and to advise students about course selection. Some colleges specify the SAT Subject Tests that they require for admission or placement; others allow applicants to choose which tests to take. Students typically choose which tests to take depending upon college entrance requirements for the schools to which they plan to apply. From their introduction in 1937 until 1994, the SAT Subject Tests were known as Achievement Tests, and until January 2005, they were known as SAT II: Subject Tests. They are still commonly known by these names. Every test is now a one-hour timed test. Historically, the exception to the one-hour time was the writing test, which was divided into a 20-minute essay question and a 40-minute multiple-choice section. The writing test was discontinued in January 2005.
A student may take up to three SAT Subject Tests on any given date at a flat rate. There is a per-administration registration fee, plus a flat fee for each test the student plans to take. Students aren't required to take the same number of tests they signed up for, nor are they required to take the same tests they initially indicated when filling out the registration form (except for language with listening tests). If one takes more tests than initially paid for, he/she will be billed later for the additional test(s). Students eligible for an SAT fee waiver are allowed to take up to six subject tests in up to two administrations free of charge.
With the exception of the March test administration, SAT Subject Tests are offered on the same days as the regular SAT Reasoning Test; therefore, students cannot take both the SAT Reasoning Test and Subject Tests on the same day. In addition, not all Subject tests are offered on every test date. Most non-foreign language tests are offered in every administration, but World History and foreign-language tests are only available on certain dates. In particular, the language tests with listening are available only once a year, in November. A calendar of test dates and registration deadlines can be found on The College Board's official website.
There are currently 20 different tests, 12 of which are foreign language. Examinees are required to bring an acceptable calculator to take the Mathematics tests (calculators are not permitted on any other test), and a CD player to take the language with listening tests.