Education Minister Hekia Parata announced last month that Salisbury School in Nelson - where Mr Sasaki's daughter Renon (15) has been educated since May - and McKenzie Residential School in Christchurch would be closed later this year.
The country's other two residential special schools, Halswell Residential College in Christchurch and Auckland's Westbridge Residential School, would remain open as co-educational facilities and a new "wrap-around" tailored service would provide individualised support for learners with complex needs in their own communities.
Schools were given a 28-day submission period to provide feedback on the proposal, which ends tomorrow.
Mr Sasaki said he had been given no certainty Renon would even be accepted into Halswell and the "worst scenario" would be having to send her back to Japan where he is originally from, where there were more facilities to cater for her needs. Renon had struggled at mainstream schools and her parents had exhausted other options before she was accepted into Salisbury School.
Mr Sasaki is writing to Ms Parata calling for an urgent review of her decision as he does not have confidence in the proposed wrap-around service.
"Salisbury School exists for those few individuals who don't fit easily into those models, contrary to the parents' sincere hope. They have tried hard before getting into Salisbury."
In an open letter, Salisbury School board of trustees chairman Helen McDonnell said many of the school's parents had indicated they would not consider sending their girls to a residential co-educational facility. She believed such a facility would put pupils' "safety and wellbeing at risk".
Submissions can be made at www.salisbury.school.nz
