- Continuous professional development (CPD) is defined as a planned, continuous process for teachers to develop personally and professionally through improving their knowledge, skills, and teaching practices. - The main purposes of CPD are to improve student learning and achievement, help teachers learn new techniques and from each other's experiences, and encourage self-reflection to enhance teaching practices. - CPD is important for teachers' confidence, motivation, career development, and students' learning outcomes. Effective CPD models are personalized, relevant, sustained over time, supported, and collaborative in nature.