This research have been investigated the role and function of in-house training to enhance the instructional leadership practices at the college-level higher education in Bangladesh. The existing policies regarding instructional leadership enhancement project is relatively unstudied and unpracticed here. To guide the study, an interpretivist paradigm and a qualitative research design are chosen to make sense of the complex social phenomenon of instructional leadership and in-house training. Again, the principals, vice-principals, heads of the department (HODs) and classroom teachers of five tertiary colleges of Pabna District are purposefully selected as participants. There are 8 semi-structured interviews for 5 principals and 5 vice principals, 10 HODs and 10 classroom teachers under central research questions. The gathered qualitative data were also analysed thematically. This study used various data triangulation methods to establish validity and reliability. All ethical consents were maintained very strictly. From the data analysis, the study finds that the instructional leadership practices can be enhanced through various cost effective in-house trainings like workshop, seminar, professional conversations, motivational discussions, mentoring, coaching, and conferencing. Successful in-house trainings establish proper mindset, develop soft skills, and enhance academic and applied understanding and proficiency on instructional issues. The study also explores that the outcome of the in-house trainings would be far better if it could be arranged under the supervision and coordination of an external training provider. If it can be done, the faculty members can get the flavor of both external and in-house training.