It's hard to teach by the book when you don't have one:
Lucas said that districts across the state used to adopt a new set of books each year, working on a five-year rotation to cover each subject area. That meant that almost no textbook was older than five years. The last time the district bought a set of books to cover an entire subject area was six years ago. More and more classes are now working with books that are more than 10 years old.
It’s unclear whether the state’s textbook budget will ever return to its peak in the 2009-10 school year. That school year, the state budgeted $111 million for textbooks. Winston-Salem/Forsyth County Schools received more than $2 million for textbooks that year. The next, it received just $88,000.
Of course there's no mention in this article of what government changes occurred between the 2009-10 school year and the 2010-11 school year. That's when Republicans finally got a chance to run things (into the ground) and "reform the failing public schools." Apparently the first step was to put a stop to all that book-learnin' and get down to the basics of forcing teachers to magically produce materials for students to study for homework assignments. Mediocrity, here we come.