Five papers presented at a symposium during the 1991 annual conference of the National Council on Measurement in Education explore the design, development, and implementation of the Texas Master Teacher Examination (TMTE) Program. Educational policymakers have begun to maintain that the professionalization of teaching can be substantially supported through such means as the assessment of teachers for higher level credentials, as exemplified by the TMTE. The papers--all prefaced with the introductory title "The Texas Master Teacher Examination (TMTE)"--include: (1) "The Legal, Political, and Historical Basis" (M. Veselka, P. Tackett, and N. Wood); (2) "Test Design and Development Procedures" (W. P. Gorth, P. M. Nassif, and J. D. Mattar); (3) "Technical Characteristics" (S. M. Elliot, B. C. Appel, and E. J. Murphy); (4) "A Sustained Strategy for Preventing Potential Bias" (E. J. Murphy and S. M. Elliot); and (5) "Written Assignment Scoring Procedures" (S. L. Downs, B. F. de Hoyos, and M. B. Karlin). The TMTE preparation and registration manual for the 1990-91 administration is included. (SLD)