- Ikoma Language School
- Bunka Language School
- Inoue School of Language and Arts
- Japanese Cultural Society Japanese Lanaguage School
- PYAESS Japanese Language School
- Hougang Japanese Language School
(Pic: crazy Queues for JCS School Registration! It seems that Japanese language studies is popular in Singapore. Lucky ne~)
I've not done much research on them as I'm really busy with work and learning by myself seems to work better at the moment. But if you want to read some comments on these schools, I've found a really good thread via Meetup.