Self Reporting Future Tests

<p>I was told that self reporting scores is better for me from some other people, and many of the people that I have talked to suggested that I self report. Now, my question is that it also asks for future tests. I plan on taking 2 or 3 sat subject tests in October, and I wouldn't get the scores until around November. Does that mean that my early schools would never see the scores that I will be getting in the common app? Would I have to send those scores that I said I would take to the colleges via college board? And if I do bad on the subject tests and would never want to show that to any colleges, does stating that I will be taking the tests and not reporting the scores be bad for my application?</p>