This study aims to describe: (1) a description of the performance of post-professional teacher development; (2) inhibiting factors for professional development to improve teacher performance and efforts to overcome them; and(3) the driving factors for professional development to improve teacher performance. The research method used is qualitative with a case study design. The research location is in a private elementary school in Malang. The data collected using observation, interview, and documentation techniques. The results of this study include: (1) the description of the performance of post-professional teacher coaching, there are differences in terms of completeness of lesson plans, teacher confidence, willingness to learn from teachers, increased interaction with students, and application of student character habituation; (2) inhibiting factors for the implementation of professional development are caused by the activities of the principal, teacher health factors, and delays due to the Basic Competency Test (BCT). Efforts were made to overcome obstacles, namely rescheduling activities and changing days for teachers who were unable to attend; and (3) the driving factors for the implementation of teacher professional development, namely the readiness of teachers to be fostered and good cooperation between teachers and principals.