180,000 yen is ok but not as good as the ALT program payed, which was about 300,000 yen per month. Is that after taxes? 10,000 yen towards housing is only about 100 USD - are you sure you have your figures correct? The yen equivalent of 100 USD won't pay for very much in Okinawa/Japan, esp. towards housing. That seems awful low. Is is a private school or a cram school?