While I'll not voice my disgust with you calling my children mush heads, I will comment on the other part of your statement. I've read the texts my children are using and have found a small number of "inaccuracies" made in the name of PC-ness. Thankfully, the teachers in this district are smart enough to use a bit of this book and a bit of that book to counteract such foolishness.
Then you are blessed to live in a region where the teachers are not anti-American socialists. Good for you.
Unfortunately, "PC-ness" reigns supreme in may regions of this great land, and UNINVOLVED parents beget mush heads.
Sorry if you took offense, did the shoe fit? If not, don't take offense at a well known phrase among conservatives.