How to prep for ACT

<p>Alright so I took the ACT today and I think I did WAY better than my last time (21) and I'm predicting about a 26-27. However, I'm thinking about taking it one last time my senior year and try to get into the 30s
2 Things:</p>

<ol>
<li><p>Do you think I should take it a third time? It's rumored at my school that taking it 3 times "Looks bad to colleges" however it may be worth it if I can truly improve</p></li>
<li><p>If I decide to take it again, how would I prepare to get a 30+? I mean I'm naturally pretty smart, I have the capability. My IQ is 137 if that helps, and I'm not trying to brag I just don't want you guys to think I have no hope and ignore me haha. So, I truly think I'm capable of scoring higher. Honestly I just don't listen/try at all in highschool which is why I don't know some of the things that are tested. Basically, my main question is what do I do? Read grammar books? Anything, how to prep in the long run. I'm willing to work very hard at this, I just need to know what to work on.</p></li>
</ol>