This manual was developed to provide a model for evaluating programs for handicapped preschoolers that can be used by all Maryland school districts regardless of size or resources. The model has five components: (1) how children are identified as handicapped; (2) what type of testing takes place before and after a child is placed in a program; (3) procedures for determining a child's program placement; (4) program effectiveness; and (5) program management of communication and recordkeeping procedures. The manual has four sections. The Overview familiarizes the reader with the model and how it can be used. The Evaluation Model section details the model's components and subcomponents, plus provides evaluation questions, data collection instruments, and suggestions for adapting and using the instruments. The third section, Managing Data, offers suggestions for collecting data, preparing data for analysis, analyzing the data, and writing up results. The Appendices contain a glossary of terms, an annotated bibliography, descriptions of different instrument types, information on instrument format, codes and identification numbers, a sample checklist and letters, information on how to calculate, establish and maintain inter-observer reliability, and sample summary reports. The model is presented as a menu from which users may pick and choose, depending on their interests and experience. (BS)