Do the teacher recommendation letters have to have the school letterhead on them?

Colleges and Universities A-Z Massachusetts Institute of Technology
1

<p>What if they just type it on a normal sheet of paper?</p>

<p>And do they have to write down their school (job) email, or can they use a personal email account?</p>

2

<p>Last I heard, it’s a new thing this year where school letterhead is required.</p>