This study explored the formulation of a structural equation model and the relationships between continuing professional education, sociability, and instructor productivity in private sectarian higher education institutions in Davao City. Using a descriptive correlation design with structural equation modeling, data was randomly collected from instructors via surveys. The study assessed productivity, sociability, and education levels using means and standard deviations. Pearson correlation revealed significant links between variables, while hierarchical regression identified key predictors of productivity. The structural equation model found a well-fitting model showing that both continuing professional education and sociability are strong predictors of instructor productivity, demonstrating their direct impact and interrelationship.