How do you send in additional letters of rec?

<p>I plan to apply caltech early action, and I have a research mentor who is not part of my school but is person from whom I plan to ask for a third a letter of rec. How would he send it in? Would he need to complete the common app evaluation like my other teachers, or would just a letter suffice?</p>

<p>Thanks</p>

<p>bump for this thread. I have a research mentor as well, that I want to ask for a third letter of rec. (Not applying to caltech, though)</p>

<p>I’m also wondering this… </p>

<p>Would I give them the same sheet that I gave my teachers?</p>

<p>My guidance counselor told me that they just write a letter and then mail that to the college, maybe with your name in the subject line or something.
Has someone else heard something different? cause that’s what I plan to do.</p>

<p>You could also upload it in additional information</p>