An increasing number of states are requiring educators to take certification tests in order to obtain a license to teach. While this trend shows little sign of waning, there is little to guide the developer of teacher licensing tests in defining test specifications in a legally and technically sound manner. This paper discusses the legal and technical issues that must be considered in developing specifications for teacher licensing tests. A practical, technically sound, and legally defensible methodology for developing specifications for teacher licensing tests from job analysis results is presented. (Author)