Stress as the event that triggers the adaptive physiological and psychological responses in an individual. Positive Behavior Therapy facilitates sound mental health leading to better adjustment. A pre experimental study was conducted to assess the effectiveness of the Positive Behavior Therapy upon stress and Coping among special school teachers at selected special school, Chennai. Twenty special school teachers were selected using purposive sampling technique. Data was collected using Demographic Variable Proforma and Stress and Coping questionnaire among selected special school teachers through self administrative method. Rating scale was used to assess the level of satisfaction of special teachers regarding Positive Behavior Therapy. Positive Behavior Therapy was conducted for special teachers. Study findings revealed that obtained post test mean value 35±10.8 was lower than pre test. Mean value 44.5±9.5 which was significant (P<0.001). Positive Behavior Therapy was effective in reducing Special School Teachers.