I applied through college or university. The process took 1 day. I interviewed at Wayne State (Detroit, MI) in Aug 2015
Interview
There was no interview for Teaching Assistant Position but we had to perform well for the exams such as Speaking test to show the clarity and fluency of speaking english as a non native speaker. It was not hard at all
I applied through college or university. The process took 2 weeks. I interviewed at Wayne State (Detroit, MI) in Jan 2016
Interview
get in touch with professor and enroll into his research, by proving your capability in research and with good gpa you can get the interview. Prepare for a presentation to present to the hiring authorities