Objectives In this study, we aimed to identify graduate students' learning experiences in graduate school, including their academic and social experiences, both quantitatively and qualitatively, and to draw implications for improving the quality of graduate education.
 Methods In order to comprehensively understand the learning experience of graduate students in science and engineering, sequential exploratory design method was conducted. First, after interviewing 11 graduate students at A University and the constant comparative method was applied. Second, based on the results, we conducted a survey of 153 students.
 Results First, the results of the interview analysis show that 'a. Deciding to go to graduate school and actively seeking information about graduate school, b. Graduate education emphasizing student-centered, problem-solving classes and research, c. Relationships for research-oriented advisors, peer learners, and professionals, and thirst, d. Growth moments’ were identified. Second, the analysis of the learning experiences revealed aboveaverage levels of higher-order learning experiences, but somewhat lower levels of collaborative learning experiences. More than 60% of students participated in 1-2 research projects as co-researchers or research assistants during the semester, and about 40% of students had written 1-2 papers. The perception of peer-to-peer interaction is above average, and relationships with advisors are relatively positive.
 Conclusions The graduate students are generally satisfied with their graduate school enrollment, major education, and relationships with advisors and fellow students. However, they felt somewhat lacking in-depth discussions with peers about the theories and techniques learned in classes, as well as collaborative learning experiences with individuals from other fields during class time. In order to provide education that aligns with the purpose of fostering advanced talents, it will be necessary to enhance the quality of education through a horizontal research lab culture and expanding experiences in interdisciplinary collaboration.