Complex sentence: Musashi University was founded in 1949 and forms part of the same legal entity, however despite their physical closeness barely any of the High School's students go on to Musashi University after graduation.
Split into simpler sentences: Musashi University was founded in 1949 and forms part of the same legal entity. Despite sharing some campus facilities with the university few of the High School's students go on to Musashi University after graduation.