We recommend that our students take one test or the other – not both.
Both the SAT and the ACT serve the exact same purpose (getting a high score on the SAT and ACT is like telling a college that you’re six feet tall, and also two yards tall – it’s exactly the same information, just with different metrics).
If you are just curious as to how you would do, you can take a full diagnostic test in the comfort of your own home without having to worry about permanent scores. Use this to decide which test to focus on and then move forward on your prep! It’s best to focus on prepping for one test rather than spread yourself thin across two.
Here is a full, free guide on which test you should focus on: