Question about submitting supplement by mail or electronically

<p>Is it possible to submit the Common App by mail and then mail in the supplement, or do you have to mail in the common app if you are mailing in the supplement?
I hope that isn't too confusing. My S needs to mail in the supplement because he's submitting a CD but he wants to just send in the CA electronically.</p>

<p>I thought I read somewhere that you had to submit both forms by the same method.</p>

<p>I think it depends on the school. I know for certain that for one of the schools I'm applying to they have to be submitted the same way but the others don't specifically say. Try calling the admissions office.</p>