APCEIU launched the Korea-Japan Teachers’ Network on GCED in 2021, and since then, participating teachers from Japan and Korea have engaged in varied activities, including collaborative lesson plan development, online seminars, joint classroom projects, and student exchanges. In 2023, the first in-person training workshop was held in the Republic of Korea. Designed to deepen the understanding of GCED/peace education of participants, strengthen their capacities to foster global citizenship through education, share good practices and cases, and plan for future collaboration, the Workshop was attended by 33 Korean and Japanese teachers who have actively engaged in Network activities, including teacher-student exchange.