The ACT test is a national college admissions test and, like the SAT exam, is accepted by all 4-year colleges and universities in the United States. The ACT test comprises subject area achievement tests in four areas: English, Mathematics, Reading, and Science. As an achievement test, it measures what you have learned in school. In this way, every time you attend class, you are preparing for the ACT test. This test has an optional Writing section. Students planning to take the test for a specific college should check to see if the Writing section is required for the schools of their choice. Keep in mind that you cannot take the Writing test separately, at a later date. You’ll have to repeat the other four test sections to get a writing test score if you find out you need it later, so it’s probably a good idea to just go ahead and take it with the other tests.