in my school, one of the largest of the nation, TA IS simply a graduate student who teaches class. in fact, lots of them are international students who score a minimum TOEFL (means horrible horrible English). do you really think that they can write a lor? i mean, lots of people who apply for med school are prestigious than they. to be a TA is really easy, that's what i am trying to say. i know literally a dozen of them. i help them getting social security card, checking account, cell phone, find apartment, buying car, grocery shopping, airport pickup, even teach them english- basically start a new life in america. lol, writing a lor for me? it's only they have problem they will come to me. btw, they are only at most, staff, but never falcuty! there is a huge distinction. everyone works in univ is staff except those who are specified as faculty.