First, the criticism of this teacher did not appear to be about her ability to teach per se, but apparently about the fact that she is bringing her own set of political and moral values into the classroom in an attempt to indoctrinate students.

Second, even if the criticism were about her teaching ability, one does not have to have a degree in the subject to offer such criticism, especially if one is a parent who spends his/her life teaching his/her child because, after all, that is a large part of what parents do. And parents typically have a lot of experience doing it. In fact, most of them probably have more experience teaching their children than this arrogant woman.

Anyway, this video just gives me one more reason to be glad that my wife and I homeschooled all three of our children.