An increasing number of schools are being rebuilt owing to problems such as decrepitude and weak seismic capacity. During the reconstruction process, temporary school buildings are often erected using a prefabricated structure. Such temporary school buildings lack acoustical performance and are exposed to construction noise. This study investigates the actual condition of these buildings, using the case of a temporary school building of an elementary school in Tokyo, and examines the possibility of improvement and countermeasures that could be taken in the operational scene.