This text is designed to accompany workshop instruction in developing an evaluation design for evaluating bilingual programs. It is addressed to those involved with bilingual programs generally, educators directly involved in planning and implementation, and research and evaluation specialists. It is organized into two separate workshop sessions: A: Basic Concepts in Design, and B: Selecting Evaluation Designs. Workshop A: Basic Concepts in Design, is an introduction to the concepts of threats to validity, controlled assignment and comparison, and the elements of design. It is designed for audiences with little experience in evaluation. Workshop B: Selecting Evaluation Designs assumes audiences are comfortable with the concepts and terminology in Workshop I and are now ready to consider the more technical and specific features of representative designs. This second workshop considers four planning questions: (1) What do I need to consider in selecting an evaluation design? (2) Which designs best fit the particular demands of bilingual education? (3) How can I adapt these designs to my particular setting? and (4) What other designs might be useful for special evaluation purposes? (Author/PN)