Klosterhofschule, Protected school complex in St. Jürgen district, Lübeck, Germany.

The Klosterhofschule is a red brick structure with long band windows located at Mönkhofer Weg 95 in the southern part of Lübeck. The building houses specialized classrooms for manual work, chemistry, and biology, plus an auditorium with a stage and a library section.

Construction of the school began in October 1929 during the Great Depression and opened in April 1931. This project represented an important educational investment made during difficult economic times.

The school's name comes from the Klosterhof, a St. Annen Monastery property on which it was built. Sculptor Alwin Blaue from Kiel made the portal sculpture of the Lübeck double eagle above the main entrance, which has not survived, a children's group above the auditorium entrance, and floor mosaics. The auditorium with its theatre stage was explicitly intended for cultural events open beyond school use.

The site is accessible from the southern part of the city, and the building's architectural features are clearly visible from outside. Visitors should note that interior access may depend on school schedules and activities.

The most unusual feature is the "Sternkammer", a simple planetarium at the top of one of the two towers of the west facade. The projector, built by Lübeck electrician Ernst Nachtigall with senior teacher Hans Cassebaum on a suggestion by Johannes Klöcking, was put into service in 1931 and still works today.