"And the lack of male teachers is a persistent concern in the education world, especially with respect to the need to provide male role models for kids of single moms."

Not by the people doing the hiring since they grow more risk adverse every year and being male is a risk. Daycares are more open about it, but elementary schools aren't far behind.

Once again, if you don't want your female child's diapers changed by a male teacher - you are part of the problem.