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<p>I am confused. Is money tight or not tight? Remember for each application, in addition to application fees, you need to also consider</p>
<p>[ol]
[<em>] Supplement fees
[</em>] Additional SAT score transmission fees
[<em>] Additional AP score transmission fees
[</em>]Additional transcript and other fees
[<em>] More work for your GC and teachers who give recommendations
[</em>] More work for you to keep track of the applications
[/ol]</p>
<p>It could easily cost $100 per college. I would not recommend 20 applications, I would try and keep it from 10-12.</p>
<p>Again, I am not going to tell you to apply or not apply. Just note that you do not have strong EC’s in science and math and everything depends your ability to convince the committee that you are passionate about math and science. Yes, you have some computer skills but I am sure there are others who have that to.</p>
<p>You do appear to be competitive but there are many other students who are also competitive. The last thing you should do is put all or most of your eggs in the selective institution category and then find you do not have the choices you want. Caltech is a little different from other institutions as one pf the posting states. </p>
<p>So you need to assess your chances yourself, no one else can do it for you, especially on an internet discussion board.</p>