Beats me, I did not write nor claim this one. I cannot offer anything in this direction as I have no basis or knowledge here.<quoted text>
On point 3 you claim that it costs 18000 to renew your teaching license every 5 years over 30 years. Are you claiming the 5 year license renewal costs 3000 dollars.
What I do know is that no one is forced into the teaching profession. All are free to come and go as they please if they do not find the work as personally or financially as rewarding as they would like.