The UNESCO Associated Schools Network (ASPnet) is an international network of schools established by UNESCO in 1953 to promote and implement its core values—such as peace, human rights, and sustainable development—within educational settings. Today, over 10,000 schools across approximately 180 countries are part of this network. ASPnet focuses on key priority areas including education for sustainable development, global citizenship education and inter-cultural and heritage learning, and carries out a wide range of activities at the local, national, and international levels. In South Korea, four middle and high schools initially joined the network in 1961, and as of now, 465 schools are active UNESCO Associated Schools. These schools aim to cultivate global citizenship among students, teachers, and parents, develop the competencies needed to build a sustainable society, and contribute to putting these values into practice.