Strategic planning practices and superintendents' opinions regarding the effectiveness of strategic planning are different among small, medium, and large Texas independent school districts. This study sought to find areas of agreement and areas of disagreement among school district superintendents relating to the practice and effectiveness of strategic planning. Strategic planning practices examined include the development of a mission statement, operating plan, and budget; involvement of stakeholders, and strategic planning logistics. A stratified random sample of 96 superintendents each from small, medium, and large school districts was selected from a population of 1,042 school districts. Data was also collected and reported from the 7 mega school districts. Questionnaires were sent to 295 superintendents and 246 (83.4%) were returned. The questionnaire contained nine questions relating to 19 strategic planning practices and a five-part question relating to the effectiveness of strategic planning. The data was analyzed using Crosstabs, Chi-square, and one-way ANOVA statistics. The level of significance was established a priori at .05. School district size was an independent variable for six strategic planning practices of small, medium, and large school districts. Significant differences were found regarding (a) whether outside consultants were employed to assist with the district's strategic planning, (b) whether central office administrators participated in the district's planning process, (c) whether a sequence of steps was followed with a time frame for each step in the district's planning process, (d) whether someone other than the superintendent was responsible for the district's planning, (e) whether school district support staff participated in the district's planning process, and (f) whether students participated in the district's planning process. Also, a significant difference was found between large school district superintendents' and small school district superintendents' ratings of the effectiveness of strategic planning for improving management effectiveness. Finally, a correlation was observed between superintendents' ratings of strategic planning effectiveness and professional skill sets.