Bundner Kantonsschule Chur is a publicly owned institution headquartered in Switzerland. Founded in 1850, it functions as the largest high school in Graubünden, Switzerland. The institution operates as a trilingual public school, supporting German, Italian, and Romansh languages. It offers a Gymnasium, an academic high school, alongside specialized programs with a focus on natural sciences, humanities, and arts for approximately 1,250 students.