The textbooks are from Texas.
are you claiming textbooks printed in Texas are used in California?
No matter where you live, if your children go to public schools, the textbooks they use were very possibly written under Texas influence. If they graduated with a reflexive suspicion of the concept of separation of church and state and an unexpected interest in the contributions of the National Rifle Association to American history, you know who to blame.
When it comes to meddling with school textbooks, Texas is both similar to other states and totally different. It’s hardly the only one that likes to fiddle around with the material its kids study in class. The difference is due to size—4.8 million textbook-reading schoolchildren as of 2011—and the peculiarities of its system of government, in which the State Board of Education is selected in elections that are practically devoid of voters, and wealthy donors can chip in unlimited amounts of money to help their favorites win.
Ever since the 1960s, the selection of schoolbooks in Texas has been a target for the religious right, which worried that schoolchildren were being indoctrinated in godless secularism, and political conservatives who felt that their kids were being given way too much propaganda about the positive aspects of the federal government.
How Texas Inflicts Bad Textbooks on Us
I recall that their work has made the news and I don't like the tampering of content areas in favor of liberal influences.