Basically, another standardized test that really tests you more on your ability to fill in bubbles than actual knowledge and smarts. Its an alternative to the SAT, accepted at all colleges (except BYU, fuckers) and is different than the SAT in a few subtle ways. Basically, if you do bad on the SAT, you might want to take a practice ACT to see if you can do better, and vise versa. Colleges dont hold one above the other, so find out which you naturally do better on ASAP so you can start prepping for it.