This study assessed the effectiveness of the Therapeutic Community Modality Program (TCMP) in the Quezon City Jail Male Dormitory, with a focus on the perspectives of both Jail Officers and Persons Deprived of Liberty (PDLs). TCMP is a structured rehabilitation approach designed to promote behavioral change, intellectual growth, and vocational development among inmates. The study employed a descriptive research design using a standardized survey questionnaire with a five-point Likert scale. Data were gathered from 110 PDLs and selected Jail Officers who were directly involved in TCMP implementation. The findings revealed that both groups generally perceived the program as Highly Effective in promoting behavioral improvements such as rule-following, self-discipline, and personal responsibility. In the intellectual and vocational aspects, participants rated the program as effective in enhancing critical thinking, communication, and work-related skills. However, slight differences in perception were noted in areas such as reinforcing positive behavior and setting personal goals. The study concludes that TCMP is an effective rehabilitative strategy within the correctional setting. It recommends strengthening ongoing training, individualized goal-setting, and post-release support to further improve program outcomes. These findings may guide policymakers and jail administrators in enhancing therapeutic interventions for inmate rehabilitation.