<p>From the Stanford Undergraduate Admissions site:</p>
<p>"You should apply as a transfer applicant if:</p>
<p>your have been enrolled full-time in college/university after leaving high school, or
you have attended college/university on a part-time basis and you have accumulated 26 or more semester or 39 or more quarter units of transferable course credit.</p>
<p>You should apply as a freshman applicant if: </p>
<p>you are currently enrolled in high school, or
you are concurrently enrolled in high school and college/university, or
you have completed high school and are enrolled in college/university on a part-time basis and have accumulated fewer than 26 semester or 39 quarter units of transferable course credit by the time you transfer."</p>
<p>Maybe the fundamental question in all of this is, "Have you graduated high school before accumulating all these credits?"</p>