The Kwan Um School of Zen is an umbrella organization for the various Zen centers and groups founded by the Korean Zen master Seung Sahn. While it uses the liturgy and forms of the Korean Buddhist Chogye Order, the Kwan Um School has adapted to fit the needs of its Western students. Unlike the mainly monastic Chogye Order, the Kwan Um School welcomes laypeople as students and teachers. Although there are monks and nuns in the Kwan Um School, they are in the minority.