California math!??
I live in silicon valley, and just recently I dropped by my local Smoothie King to acquire a strawberry shredder smoothie (my favorite). While there, I noticed that the person serving behind the counter was studying her high school mathematics textbook. She laid the book on the counter while making my smoothie. Having two degrees in math, and fondly remembering my own high school math texts, I was pleased to leaf through the text. Until I saw the cover: stamped on the bottom of the front cover was a large label saying "California Edition"!!
I know some are having a good laugh at my naivete, but I had never thought about an obvious result of government's near monopoly of education - government-approved mathematics! In Galileo's day, we had church-approved science, and in our day we have state-approved mathematics. The more things change ...