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<p>Careful. You have to use the I-20 from the college you will be attending, not just any generic I-20 form. The government will check with the college whose I-20 you use that you indeed showed up for college at the beginning of the school year. If you use the wrong form, that college will have to report you as absent and you will be in trouble the next time you are trying to enter the US.</p>
<p>The only thing you can do before you decide which college you will ultimately attend is setting up a visa appointment time.</p>