What do you know about who writes the text books for public education? I know of a 'writer' who is out and out 'red' socialist who writes text books. I am not convinced there won't be a lawsuit that the supremes will come down again on the side of the God did not do it crowd.
Schools are still able to select their books (book adoption)-—but just barely.
That being said, there are, indeed, writers/publishers who are redder than red.
The reason why is because Texas only adopts ONE textbook for the ENTIRE state. Therefore, they tend to set the trend for most of the nation.