Continuous professional development programs play an essential role in developing competency of teachers, because of their positive impact to students' academic achievement.Professional Development program is aimed at equipping teachers with the necessary knowledge and skills to make them efficient, effective and successful in their job. While the importance of continuous professional development is recognized, more investigations are needed to describe and identify the current professional practices and needs of teachers as bases in crafting an effective professional development program. In such perspectives, this study was conceptualized. Through the interviews, the study produced extended texts as a result of transcribing the interview recordings. Thorough text's thematic analysis on professional development practices led to the discovery of important three themes dubbed as ACE: Attending Professional Activities, Collaborating with Colleagues, and Enrolling Graduate Studies. These themes emphasized the professional development practices of teachers. Furthermore, this study discovered the professional development needs of teachers as revealed by the thematic analysis of the gathered data, dubbed as the 5S of teachers. These needs are focused on having intensive trainings on strategies in Integrating Information and Communications Technology (ICT) to pedagogy, strategies on classroom management, skills in communication, strategies in localizing instruction, and skills in writing research. Finally, the study concludes that undergoing ACE will address the identified 5S. In such light, the localized primer developed may be used to crafting and implementing professional development programs thereby enhancing teachers' competency that will ultimately pave the way for transformative teaching practices, enriched learning experiences, and empowered students.