Objectives This study analyzed the learning effects of flipped learning linked to subject-matter subjects to strengthen the major abilities of students in the Department of Police Administration at K University. Specifically, flipped learning was used as a teaching and learning method in the 'Forensic Investigation' class, a major subject in the Department of Police Administration, and was linked to a non-curricular program operated by the Teaching and Learning Development Center on campus.
 Methods To this end, flipped learning using scientific investigation videos of actual crime cases was conducted for 13 weeks in the forensic science major subjects, and as a subject-related extracurricular program, a forensic investigator from the K Local Police Agency was invited to give a special lecture on the major, and on-campus teaching and learning was conducted. It is designed to enable participation in learning communities or tutoring conducted by the development center. In order to comprehensively analyze the major abilities of participating stu-dents, we conducted lecture evaluations and special lecture satisfaction surveys on flipped learning using criminal investigation series (forensic video), and conducted in-depth interviews about learning experiences using Colaizzi's phenomenological method. It was carried out.
 Results The lecture satisfaction level for ‘Forensic Investigation’ using flipped learning and subject-related ex-tra-curricular classes was 4.65, which was improved from the previous year’s class that did not apply the sub-ject-connected extra-curricular program, showing that there was an educational effect on the learning experience. In addition, as a result of analyzing the learning effect of flipped learning, four central meanings were derived: class attitude, communication ability, class performance, and improvements. Lastly, as a result of analyz-ing the satisfaction level and in-depth interviews with the non-curricular program linked to the major curriculum, it was confirmed that it was helpful in motivating police officers to join the police force and cultivating criminal in-vestigation capabilities.
 Conclusions This study conducted an analysis of the learning effect of 'Forensic Investigation' in the Department of Police Administration at K University, which was found to have a positive effect on improving the ability to utilize professional knowledge related to criminal investigation, self-directed learning ability, convergence ability, and communication ability, which are major abilities. It is valuable in that it contributed to breaking down the bounda-ries between major subject classes by overcoming the constraints of limited class time and enabling individual in-depth learning by linking flipped learning, a learner-centered teaching and learning method, with extra-curricular programs.
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