I made a post earlier but I didn’t want to clutter it with a bunch of questions. But as for this, can someone list out schools (or schools that don’t) need all or any subject scores to be released but may require all SAT 1s or all ACT. Thanks so much!
Here’s a pretty comprehensive list: http://blog.prepscholar.com/complete-list-of-colleges-that-require-sat-subject-tests
If you don’t see yours there, you can always go to the college’s site directly, and they should have more information on their admission requirements. Also, be sure to check the particular program/college you’re applying to because it can vary within a University.
There is a way to cancel scores, but only until the Wednesday after the test. Once you get them it’s already too late.
If your college is on this list: http://blog.prepscholar.com/colleges-requiring-all-sat-scores-complete-list , you must submit ALL test scores, and you can’t use score choice. This is done on an honor code, but I highly recommend you send all your scores if they ask you to, since if multiple scores show up on your transcript or something and they find out you haven’t complied, there’s a good chance they’ll just toss your application out. It’s really not worth the risk. However, if your college only requires one set of test scores or allows score choice (which most do) you are under no obligation to send all of them. For instance, if they don’t require subject tests and don’t want all of your scores, there’s no reason to submit those scores if you think they’re going to hurt your application.
I hope I answered all of your questions- let me know if there’s anything else 
@CacaoNut13 This was really helpful. Thank you so much!
@“Erin’s Dad” Thank you for the link!