I saw this this morning:
From National Review.com:
"Male aggression can be a good thing, as in protecting the weak — but it has been forced out of the culture of elementary schools and the education schools that train their personnel. Think of what Sandy Hook might have been like if a couple of male teachers who had played high-school football, or even some of the huskier 12-year-old boys, had converged on Lanza."
According to the stats from the Department of Education as recently as 2007-2008, females comprised 76% and males 24% of all public school teachers. I found this from an article in the Huffington Post: