Schools of Japanese tea

Sen no Rikyū, who perfected the wabi-cha manner of tea and was the founder of the Omotesenke, Urasenke, and Mushakojisenke tea families (portrait by Hasegawa Tōhaku)

"Schools of Japanese tea" refers to the various lines or "streams" of Japanese tea ceremony. The word "schools" here is an English rendering of the Japanese term 'ryūha' (流派).