China Ivy School, Inc. is a China-based company principally operates an educational facility under the name Blue Tassel School (BTS), which provides a curriculum required by the Government of the Peopleâs Republic of China, supplemented by a range of elective courses that may be chosen by its students. BTS is an education center located in Suzhou. BTS is a boarding school comprising grades from kindergarten through senior school, including an international school. The five schools that comprise BTS are kindergarten, primary school, junior high school, senior high school and international school.