Passbooks: - National Learning Corporation has been a leading publisher of test-preparation Passbooks(R) for more than 50 years, with 6,000 titles available across 22 series. The National Teacher/PRAXIS Examinations are designed to provide objective measurement of the knowledge, skills and abilities required of teachers. The test results are used for the various levels of teacher certification: initial, qualifying, validating, statutory, incremental, promotional and/or supervisory. Each book offers practice through multiple-choice questions and answers in relevant subject areas, as well as informative texts to aid in understanding the study material.