This book is a theoretical background and practical practices study of Assessment Literacy for English Language Teachers to be assessment literate educators. As a result, readers will have a new demonstrative experience based on the theoretical aspect of assessment which enables them to form full understanding of Assessment Literacy , deepen their understanding regarding the value the importance of Assessment Literacy, define Alternate Meanings of Assessment, list relevant and meaningful Assessment Tools, define key concepts of evaluation, assessment and testing, identify the relationship between assessment and evaluation and differentiate between the Pillars of Assessment: Validity, Reliability and Fairness.