Educational Assessment and Evaluation

The purpose of this book is to equip learners with knowledge and skills of assessment and evaluation. The book explores the importance and use of evaluation to all education stakeholders. Most importantly evaluation helps to determine to what extent the broad objectives of a programme have been achieved. In addition the book focuses on the scales of measurement various ways a teacher can use to estimate reliability of measurement instrument using test-retest measure of equivalence and measure of internal consistency. Guidelines of test construction are also discussed which include test blue print construction. Further the book highlights the statistical ways of analyzing learners test results such as measures of central tendency and measures of dispersion. Finally this book provides a discussion of statistical item evaluation such as item difficulty level and the discrimination index.