In Kumagaya Prefecture, Kawase promoted the building of a modern yarn-making factory as a state-owned Tomioka Seishi-jo (Tomioka Silk Mill), and after its success he founded schools in Maebashi City and Kumagaya City.
熊谷県では、県内にある官営富岡製糸場の成功に乗る形で同様の近代的な製糸工場の設置を進め、前橋市や熊谷市に学校を新設した。