Abstract : This descriptive study assessed the level of classroom professionalism among teachers of Cabitan National High School. All 51 teachers participated through complete enumeration. A validated 20-item self-assessment tool measured five domains of professionalism: professional responsibility, teaching commitment and ethics, classroom management and learner engagement, professional relationships, and continuous professional growth. Findings revealed that 52.94% of teachers were Proficient and 47.06% were Highly Professional. No respondents were classified under Developing or Needs Improvement levels, indicating a generally high level of professionalism. Results align with the standards of the Department of Education, Philippines through the Philippine Professional Standards for Teachers (PPST). However, the dominance of the Proficient level suggests the need for continuous professional advancement. Based on the findings, a professional development program titled “Project RISE: Reinforcing Instructional Standards and Excellence in Teaching” is proposed to further enhance teacher competencies.