Nihon Go Gakko (シアトル日本語学校 Shiatoru Nihongo Gakko) also known as the Japanese Language School (JLS) is a National Register of Historic Places in King County based at the located on the periphery of the Seattle International District. The JLS provides Japanese language classes to both children and adults. Originally known as Kokugo Gakko, it is also the oldest Japanese language school in North America.