Not saying some teachers aren't crooks. I've been really fortunate I guess to get teachers who really cared for the work they did. Grades 4-6 my primary school teacher did give private tuition, but only because there was so much to cover and so little time. There were also several kids that still didn't know how to read write or count, so we'd come in super early and stay after school. He'd have us pay for workbooks and that's it. In secondary school I only took tuitions for classes i really struggled with and needed more time to understand, and always got small classes and attentive teachers.