This document discusses test development and evaluation. It begins by outlining the objectives of the unit, which are to understand the purpose, need, scope and types of tests, as well as their role in educational measurement. It then discusses the purpose and need for tests, including for selection decisions, student classification, grading, monitoring performance, diagnosis and guidance. It describes the concept of testing and differentiates between formative and summative evaluation. It outlines the types of tests, including essay, objective, supply type and selection type questions. It discusses the significance of objective and subjective tests and provides examples of renowned tests like the SAT, GRE and Iowa Tests of Basic Skills.