Ethics of an Unemployed Teacher

Hi, 

I have taught, but am not currently an employed teacher. I'm unemployed. Is it ethical for me to join Khanmigo as a teacher and learn how it works, so that I may some day use it in tutoring as a freelancer or as a part-time/full-time teacher some day? I was a TA this year, as well as a Section Leader for coding camps. But that is no longer in session.

I would especially like to get certified with Khanmigo and put it on my LinkedIn. 

Best,

Matt