<p>Do they need to be RECEIVED by Nov. 1?</p>
<p>from the site:
<a href="http://www.admissions.caltech.edu/applying/deadlines%5B/url%5D">http://www.admissions.caltech.edu/applying/deadlines</a></p>
<p>"Test Dates</p>
<pre><code>EARLY ACTION
October, 2007
Last month for taking SATs/ACTs"
</code></pre>