5 Answers

....use due process

....begin with teacher, then principal, superintendent and finally school board

I'm a liberal. The only one that's answering questions on this site. I'm afraid it IS illegal. Even a democrat would find what you're writing as unfair and wrong. If your children ARE becoming liberals, it's because they woke up. You failed to say how old your child is. Not far from being of age I would guess....

Your classrooms are definitely different than Canada's.  That is far over the top and not in any prescribed curriculum.  .... Very odd. 

I work inside the school system in my country in a volunteer basis.  What you have just described is illegal.  If what you are explaining is actually happening, it should be reported.  If this is a social sciences class... that is a different story.  Objectivity may be the lesson of the day.  I actually had a course on that subject many moons ago.

You need to share more.  No one is told to watch one type of news when studying.  As a student, you are taught to watch and read all of the news... and go from there.  That is what makes the subject of news exciting... and of course the research. 

I can not imagine that very specific guidelines are not attached to your children's curriculum.  That idea is strange.   

It's called brain washing.

It took until I entered the watchmaking school for me to understand that my father both wanted to make sure that this is what I really wanted and that I was ready for the challenge of the treatment of women in link the profession that was so old and so slow link to change. He just wanted to protect me and know I had the shoulders link to bear the challenge.