In a discussion of the value of standardized tests and their implications for effective teaching, the author contends that such tests are useful in keeping those concerned with the learning process focused on the main target. In addition, standardized tests serve to (1) reveal variations in the effectiveness of different instructional procedures or curricula, (2) motivate teachers and students to succeed, (3) recognize and reward success in learning, (4) facilitate comparisons of the effectiveness of students, teachers, and schools, and (5) focus on schooling as a purposeful educational activity with results that can be assessed and documented systematically. The limitations of standardized testing and alternatives to testing are discussed. (MV)