You sign up, you study, you stress out and finally you take the test. Repeat if desired.
Because taking the SAT or ACT is an unavoidable requirement for most students applying to college (unless you choose only test-optional schools), it can start to feel like you're just going through the motions. But have you ever stopped to really think about what your SAT or ACT score says about your ability to perform well in college classes? Because that may be what college admissions committees are doing when they look at the test scores you've submitted to them.