I applied through college or university. The process took 4 weeks. I interviewed at Baron Education (Denver, CO) in Oct 2018
Interview
Met at school career fair, where I filled out a form asking for my test scores and academic background. Was asked back for an interview where I had to teach the interviewer a couple of SAT problems from all three sections of the test. After that, they just asked if I had any questions and I was later contacted about starting immediately.