This research aims to analyze the improvement of technical competencies and changes in pedagogical behavior on competency-based training and assessment. We developed a modified conceptual model with the help of previous literature. We examined the impact of competency-based training & assessment on traditional teaching methodologies, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. We also incorporated behavior & psychological aspects of teachers as mediators in our modified conceptual model and examined the mediation between exogenous and endogenous variables. We have collected the data of 458 respondents using a modified structured questionnaire from public and private teachers of Sindh technical and vocational institutions online from different regions of Sindh, Pakistan. For the data analyses, we employed SEM-based multivariate techniques. The findings exhibit that the direct relationship between competency-based training & assessment (independent variable) has a significant and positive influence on traditional teaching methodologies, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. Similarly, the findings further concluded that behavior & psychological aspects are potent mediators between competency-based training & assessment and traditional teaching methodologies, teaching-learning abilities, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. Hence, the behavior & psychological aspects of teachers is a vital factor that accelerates the impact of competency-based training & assessment on the dependent variables. The outcomes of this research are imperative theoretical and practical implications, which may guide the direction of future researchers and policymakers of vocational training and education.