On AM radio talk back this evening the subject of male teachers came up. Many schools said they would love more male teachers but when a position is advertised you get 100+ applications. Maybe 5% will be men. When 95% of the applicants are women then usually the top applicant is a women.
"As much as we would love more male teachers we have to hire the best applicants. If the best applicants aren't men then there isn't really much we can do".
So that is pretty solid proof that having a quota would mean that not the best applicants are getting hired.