ISI Japanese Language School
- ISI Japanese Language School
- Shinjuku campus (Tokyo)
- Takadanobaba campus (Tokyo)
- Ikebukuro campus (Tokyo)
- Shibuya campus (Shibuya building, Tokyo)
- Shibuya campus (Harajuku building, Tokyo)
- Osaka campus
- Kyoto campus
- Nagano campus (Nagano prefecture, Ueda city)