The objective was to analyze a training process on the characteristics of the Health at School Program with school principals. The study was carried out with an action research in a qualitative approach. The study scenario was the municipality of São Benedito, Ceará. The research participants were ten public school principals. In phase I, after analyzing the responses, it was diagnosed that 90% of the directors knew about the program. In phase II, an action was taken in the format of training on the Health at School Program. In phase III, there was a group interview with the directors participating in the training, in which they reported that the training was excellent, practical, objective and dynamic. The research results indicated that the training on the mentioned program contributes significantly to the transformation of professional practices, constituting itself as an essential strategy for the improvement of the actions of the Health at School Program.