Government agencies administer exams to appraise educators' effectiveness. However, most teachers and administrators are unfamiliar with how such large-scale tests are put together or polished. A profession's adequacy is being judged on the basis of tools that the profession's members don't understand. As such, educators need to have a dose of "assessment literacy." In this article, the author explains what educators need to know about assessment literacy. The author also suggests that it is important for educators to know that validity is a property of a test-based inference rather than of a test. They also must undertake promulgation efforts directed towards four audiences: (1) the educators themselves; (2) the parents; (3) the citizens; and (4) the students.