The best answer I can come up with is just donāt teach children under 16 or so if unless all you care about is making money.
This is absolute crap. I say this as a former kid and as someone that teaches a lot of kids. What we do can have a very major and positive impact on children, more so then on adults in many ways. This is like saying if you want to be a teacher only teach University, only teach kids if it's for the money.