I applied online. The process took 2 weeks. I interviewed at Academic Approach (Chicago, IL) in Sept 2018
Interview
Brief 1-on-1 interview where someone asks you about your qualifications followed by a very short "lesson" presented to a group in which you teach a skill to the group. Before the 1-on-1 interview, you have to take a pre-screening online test that's like a mini SAT or ACT to see if you remember the skills you will be tutoring students in.