Book excerpt: Expert instruction from the makers of the Praxis The Praxis Series: The Official Guide comes straight from Educational Testing Service (ETS)--the people who make the test. If you need to take these state-mandated teacher licensing exams, this book gives you complete information about the entire Praxis series. This book includes a complete Praxis I: PPST exam review. Six full-length, authentic PPST tests are provided in the book and also in interactive format on CD-ROM. You will also find authoritative information about the Praxis II Subject Assessments, the Principles of Learning and Teaching (PLT) exam, and much more.