...I simply don't want my daughter, who is more interested in socializing and texting to let this opportunity to confront such radical ideas, get away. She can respectfully question him in a classroom setting and make sure that the opposing views are heard.
And any teacher whose goal is to develop truly educated adults, with strongly developed critical thinking skills would welcome such debate. During my fifteen year tenure teaching in a public high school, I often used debate as a learning tool.
But the debate I encouraged was between students, with me as moderator. Sure, I would occasionally ask a question designed to elicit a well-thought-out answer but no teacher in a public school system has the right to bring her/his personal bias to the classroom and teach it as fact. Teachers have the unfair advantage of speaking from a position of authority and there are far too many quiet, shy young people who will without argument accept what teachers promulgate as uncontroverted truth.
Excellent teachers do not teach final positions. They teach the thinking skills which allow students to reach a well-reasoned position on their own.
I agree with Maria that debating this guy is probably fruitless.
However, in most public school systems, there is a complaint hierarchy for complaints. If you go to a building administrator about a teacher, the first thing the administrator will ask is "Have you talked to the teacher about this?"
My response to this teacher's unwarranted interjection into curriculum of his personal beliefs would be to set up an appointment with this teacher, ask if he believes he should be espousing his personal beliefs about population as truth, then let the conversation go from there. Ask questions. Take notes of responses. Quite possible, as often happens with opinionated. egotistical people, that first question may give you all the ammo you need to request a meeting with the building administrator.
If the building administrator does not satisfactorily address your concerns, go to the superintendent of schools. Still no satisfaction? Request a spot on the school board's agenda for the next meeting.
One caveat, though. Before doing this, clear it with your daughter. I have made the mistake of jumping to the defense of my children when they didn't want me to.
But no teacher should be allowed to get away with what this one is promoting.
I will consider your position if stated with firm, well-thought-out, quiet reasoning. Hateful diatribe, ad hominem attacks and shouted rhetoric don't impress.