Despite the presence of the "Common Core aligned" labels, all textbooks studied had notably large areas of misalignment. All textbooks systematically failed to include content (far less than 1% of total content) on advanced levels of cognitive demand like generalization and application, even though about 10% of the standards content is on those skills. A substantial chunk (10-20% of the textbooks' 100+ lessons) was on content not in the corresponding standards, and about 15% of the standards were not in the texts. Finally, I compared the textbooks to prior versions of the same textbook series that claimed alignment to Florida's standards. I found substantial agreement (60-95%, depending how defined) indicating that publishers used much of the same material to cover Common Core as to cover Florida's standards. This is despite the fact that the two sets of standards ask for very different content.