<p>When can we choose our classes? I also want to take some placement test to place out of some classes, how should I do it?</p>
<p>Boomer,
I think Purdue has a "Day on Campus" program from mid-June to the first part of July where you can register for classes and take college credit classes.</p>
<p><a href="http://www.purdue.edu/dayoncampus/%5B/url%5D">http://www.purdue.edu/dayoncampus/</a></p>