Professional development, such as In-Service Training for Teachers (INSET) of the Department of Education (DepEd), is one of the tools to help improve teaching-learning. The current trend is Industrial Revolution 4.0, and the education system is to gear toward Education 4.0. This qualitative research used automated micro-targeting, interview, and document analysis. This study aims to identify the themes and integration of Education 4.0 in the conduct of INSET during School Year (SY) 2019-2020. The results exposed INSET this academic year is focused on teachers' and students' development as a whole in both summer and semestral break training. Almost all the topics are content-based, and no hands-on activities are facilitated except for action research making. None of the themes or topics selected for Education 4.0. In Category A, the highest answers were of the whole informants revealed 77.78% for "INFORMATIVE"; in Category B, the highest was 75.00% for "USELESS"; and in Category C,52% for "NOT AWARE." Luzon showed a positive response in the implementation of INSET, but in the Visayas, the majority are not satisfied with how the training was conducted. The education system of the Philippines will continue to suffer if there is no fixed standard for INSET and reflected in numerous local and international assessments. Evaluation is the key to identify the advantages and disadvantages of INSET. Furthermore, to increase interest and participation among teachers, hands-on activities and current trends are suggested for the themes. School heads adopt the Lesson Study approach in implementing INSET activities.