Purpose: This study aimed to explore the experiences of instructors who participated in and operated a parent education program utilizing the Juingong-gwan practice at the H Science Institute, and to understand the meaning and essence of this program. Methods: This study employed a qualitative content analysis. In-depth individual interviews were conducted with six instructors who participated in the parental education program at H Science Institute. Data were collected over three months from July to September 2023. Results: Seven main themes were identified from the instructors’ experiences in the parent education program at the H Science Institute. The main themes include “Participation with various motivations,” “The essense of parent education: team discussions,” “Feeling compassion and responsibility,” “Challenges in creating lectures,” “Realizing the possibility of mutual change,” “Growth and Transformation through instructor and helper roles,” and “Hope to spread awareness.” Conclusion: This study confirmed that the parent education program utilizing the Juingong-gwan practice at H Science Institute promotes positive changes for both parents and instructors. It also suggests the need for program development, including the use of online platforms, the introduction of step-by-step advanced courses, the provision of follow-up programs, and the expansion of programs that support both teachers and parents.