The ACT (American College Testing) is a standardized test used primarily for college admissions in the United States. While Canadian universities generally don't require the ACT (they focus on high school grades and provincial curriculum), Canadian students may take it if applying to American universities. The test covers English, mathematics, reading, and science, with an optional writing section. Unlike the SAT, the ACT includes a science reasoning section. Some Canadian students attend test prep courses for the ACT if they're planning to apply to competitive U.S. schools, though this represents additional expense beyond what's needed for Canadian post-secondary applications.