recommendation envelopes

<p>For teacher recommendation envelopes, do YOU have to write the return address or can I just put a label saying "</p>

<p>"Teacher Name
whatever main street
springfield, anystate 02493" (made up of course)</p>

<p>or do the teachers write the return address? Do I have to indicate somewhere on the envelope "Teacher recommendation for Joe Smith" </p>

<p>And do I just give them one common app form and have them photocopy it or should I have to print out common app forms for each school?</p>