> The wage gap between teachers and non-teachers disappears when both groups are matched on an objective measure of cognitive ability rather than on years of education.
That “objective measure” is based on human capital model of wages, and it seems to me pretty biased to apply to such a specialized profession.
Being wonderful at making a group of 6 years old engaged in your teaching and making them progress seems pretty hard to directly transfer to any other non teaching job.
I feel it’s like asking a pro sax player to transfer skills in another domain and ponder they lose a lot of market value.
Which is also part of the other quote you bring in. If I were to move to a teaching position, I’d look damn hard to be better paid or I wouldn’t move. And it’s not like an Amazon factory worker could just move into teaching tomorrow when he can’t take it anymore. So the pool going into teaching is extremely self selected and also biased.