"The futility of attempting to upgrade the teaching profession by paying higher salaries is obvious, so long as legal barriers keep out all those who refuse to

"The futility of attempting to upgrade the teaching profession by paying higher salaries is obvious, so long as legal barriers keep out all those who refuse to take education courses. Theses courses are negative barriers, in the sense that they keep out the competent. It is Darwinism stood on its head, with the unfittest being most likely to survive as public school teachers." Thomas Sowell, Inside American Education, p.25-6