I do not know why you contacted me, I am not a teacher. I am a manager in the education industry with in depth market insights

+ leading educational publisher K12 CEO
+ I did the maths for a teacher-tuition platform for GSA and decided not to do it: average tuition fee is about €40, it is + difficult to offset customer acquisition cost + platform cost as €40 is also about price max. from parents.
early stage advisor to leading tuition platform (significant market capitialization by now)