An eight-factor survey-based Bayesian model ("Bridge-It") for assessing school capacity to implement health and education programs was tested in secondary analyses of data from 47 schools in the Texas Tobacco Prevention Initiative (TTPI). "Bridge-It" was used during the pre-implementation phase and again at mid-course of the TTPI 2 years later. Achieved implementation status was evaluated in follow-up almost 4 years after the start of the TTPI. The "Bridge-It" score aggregated across all eight of the capacity factors predicted both quality of adherence to the "Guidelines for School Programs to Prevent Tobacco Use and Addiction" and quantity of implementing activity. The school-based leadership factor was an independent predictor of quality of adherence whereas the facilitation processes factor predicted quantity of implementing activity. Integration of "Bridge-It", or comparable multi-attribute tools, into the planning and evaluation of school-centered programs can increase understanding of factors that influence implementation and provide guidance for capacity building. (Contains 5 tables.)