Just the text book creators being influenced by their biggest consumer. "Texas buys 48 million textbooks every year. No other state, except California, wields

Just the text book creators being influenced by their biggest consumer. "Texas buys 48 million textbooks every year. No other state, except California, wields that sort of market clout."[1] http://www.nea.org/home/39060.htm http://www.nea.org/home/39060.htm