Help? Changing Tests?

<p>Initially, I registered for the chem and world SAT, but I'm not feeling confident about history at all. As in, I can't even get above a 700 at this point. Should I just switch to math I? I'm taking math II next year so math I is kind of pointless, but at least I can guarantee a good score.</p>

<p>I was also thinking about taking world and then cancelling my score afterwards, but then found out that I'd have to cancel my chemistry score, too.</p>