We proposed the concept of ‘the school as a town’. As it is the case for an existing town, we designed to construct several school buildings and to place a courtyard, open space, and small vegetable field in between in order to stimulate activities by children and the entire community. A landscape of school buildings, an appearance and atmosphere of the architecture and its structure, and a passage of light and wind are all blended to symbolize a community with diversity. In addition the school enables children to make their own discoveries with its “heuristic” nature like a town. Almost all lumbers we used in this project are from Nagano prefecture. 78% of the prefectural land is covered in forest, with a higher proportion of larch,(conifer plantation) than other prefectures. 3,760m3 of lumber from the prefecture, equaling 28,000 trees and 250 hectares of thinning area, are used as structural and finishing materials. As a result, we contributed to keeping 250 hectares of forest in a healthy condition. In this project, we successfully used larches, unsuitable for lumber due to their twist, warpage, and unstable quality, as structural materials and not just for finishing. Furthermore, we established a traceability system which clarifies the growing district, the channel of distribution, and lumber mill for the first time ever in the country. This also came with advanced wood processing and drying techniques, and a quality control system in Nagano Pref. We applied Japanese traditional wooden construction techniques to Inariyama Special Education School, which uses no metallic materials and instead uses solid lumbers, as seen at “Horyu-ji temple”. No usage of metallic materials and laminated lumbers kept energy consumption and CO2 discharge from the manufacturing process to a minimum. Therefore, the school buildings became environment and region-friendly, and also comfortable for students and teachers who work here.