The purpose of this study was to identify the factors and data that influenced the key implementation decisions of a ninth-grade dropout intervention program in a large urban high school in 1987-1988. The school district was composed of 12 high schools, 15 middle schools, and 48 elementary schools, and served approximately 40,000 students. Data findings are divided by topic headings in the following manner: (1) information needs of the administrator/pilot facilitator and others responsible for making decisions regarding the implementation of an intervention program; (2) changes in the information needs of decision-makers; (3) data collection strategies that were used by decision-makers; (4) key decisions and factors that affected the implementation; and (5) use of data that were generated. Factors, events, and situations that affected the implementation of this pilot program are identified. This study revealed that once the school year began and a modified pilot program was in place, the flow of information from one level of decision-makers to the next rarely took place. The study also suggested that, once the superintendent has made the decision to implement a pilot program, a set of specific questions should be developed to provide a standardized method of collecting data. A sample question design is included. Recommendations on planning and implementation are discussed. Appended are 13 references. (SI)