The purpose of this research is to describe the good practices of case methodbased learning in elementary schools. This research is a continuous classroom action research using the Collaborative Nested Action Research (C-NAR) approach. In this case, in addition to teachers continuing to make continuous improvements in learning, lecturers make continuous improvements in mentoring. Data collection techniques were carried out through conference-based observation and reflection. The instruments used in collecting data are observation sheets and reflective journals of the results of the conference. The collected data were then analyzed using a flow model qualitative data analysis technique by following the stages of data reduction, data presentation, and drawing conclusions. The results of the analysis of the effectiveness of case methodbased good learning practices in elementary schools obtained an average value of 3.52 in the Very Effective category. Based on this data, it can be concluded that learning using the case method with the C-NAR approach is effective in improving the learning processes and outcomes of students in elementary schools.