Unequivocal writes "Recently California's Governor announced a free digital textbook competition. The results of that competition were announced today. Many traditional publishers submitted textbooks in this digital textbook competition in CA as well as open publishers. An upstart nonprofit organization named CK-12 contributed a number of textbooks (all free and open source material). 'Of the 16 free digital textbooks for high school math and science reviewed, ten meet at least 90 percent of California's standards. Four meet 100 percent of standards.' Three of those recognized as 100% aligned to California standards were from CK-12 and one from H. Jerome Keisler. None of the publisher's submissions were so recognized. CK-12 has a very small staff, so this is a great proof of the power of open textbooks and open educational resources."