Do colleges have a way of knowing if you've taken the SAT?

<p>I'm applying to the University of Michigan as a transfer and they say that you have to send in your SAT/ACT scores only if you've taken them. The problem is that my SAT is not up to snuff, and would rather not send it in. So what I'm wondering is if there is a way for them to check if you have taken it at all.</p>