This document discusses the importance of assessment literacy for teachers. It defines assessment literacy as a teacher's knowledge of key testing concepts and ability to use assessments to improve teaching and learning. The article outlines seven key concepts of effective assessments: usefulness, reliability, validity, practicality, washback, authenticity, and transparency. It explains these concepts and how understanding them can help teachers create better assessments and use results to modify instruction. Overall, the document advocates for teachers gaining assessment literacy in order to more effectively evaluate students and inform their own teaching practices.