Guidelines are given for the preparation of test items and tests for BSCS (Biological Sciences Curriculum Study) biology, including examples of items testing four major kinds of abilities: ability to repeat or use information and meanings, ability to apply principles, ability to apply intellectual skills crucial to the understanding of biological science, and ability to see and discuss relationships. The evaluation and interpretation of test scores is discussed. The bulk of the book is made up of sets of sample multiple-choice test items for thirteen BSCS laboratory blocks. Each set of about 100 items is prefaced by a list of concepts to be developed during work on the block. The laboratory blocks covered are: "Animal Growth and Development", "The Complementarity of Structure and Function", "Plant Growth and Development", "Microbes: Their Growth, Nutrition, and Interaction", "Field Ecology", "Regulation in Plants by Hormones", "Life in the Soil", "Animal Behavior", "Genetic Continuity", "The Molecular Basis of Metabolism", "Physiological Adaptation", "Radiation and Its Use in Biology", and "Evolution". (EB)