That's true. But if the assumptions in the article and by the poster of the article are true, why would they quit such a cushy job?
And why aren't more people trying to become teachers?
The "cushy" jobs are all taken. The jobs readily available are in places where you don't want to visit. Even in the good schools, the lack of respect that teachers receive is amazing. Even in the top 16 private schools, where teachers have degrees from the Ivies, they are treated like servants by the upper class parents. In the public schools they have the ignominy of being treated like servants by persons of no class whatso ever.