In order to assess post-high-school plans of seniors, a survey was developed to ascertain high school seniors' educational and career goals. The survey, developed in Denton County, Texas, was administered to 575 seniors in nine of ten Denton County public high schools. This article briefly reviews the development and methodology from initial proposal through organization, planning and instrument construction to pilot studies and formal administration of the survey. The final survey was adapted from an existing survey instrument to fit the needs of the Denton County population. Considerations for construction of the final survey instrument are presented and its administration, which took place in the spring of 1978 and involved 86% of all seniors in the participating high schools, is described. A delineation of limitations to be considered when interpreting survey data is followed by a discussion of safeguards taken to meet these limitations. A copy of the High School Senior Survey is provided. (NRB)