I was contacted by a Professor from a previous class that I had taken about being a teaching assistant. I filled out a form for the job and got an email a couple of days later that informed me that I had been accepted for the job.
J'ai postulé via une autre source. J'ai passé un entretien chez Purdue University
Entretien
Easy, there was no interview at all. The chemistry department trusts all students and gives them a teaching job if their research professor is not paying them a research assistantship.