For a year and a half in college, I was a part of a really cool non-profit run by students. As such, there were no adult supervisors and I didn't have any bosses. I am thinking of getting a LOR from a co-worker who I worked with on this project. Do you think that schools would take such a letter seriously enough even though we were both students at that time? Plus, another consideration is that we both held leadership positions, so she wasn't in a position to evaluate my performance, strictly speaking.