Retaking SAT IIs

<p>I'm taking mine for the first time in about 4 days, but haven't prepared. If I get rubbish marks this time round but great marks next time round, will this make much of an impact on Harvard's decision? Will they feel I was just lazy the first time.. just got lucky the second time.. or will they not care too much?</p>

<p>Basically - is it worth taking them and risking a bad mark, or should I wait until next time (but I won't have a chance to retake)?</p>