Hutt Valley High School is waiting to find out when its mouldy classrooms will be fixed, and a parent says although work is underway there's no certainty for the pupils.
Megan Drayton attended a community meeting at the school on Thursday evening to discuss the mouldy conditions which closed 16 classrooms and displaced 500 students.
The students - mostly seniors - are now working from home two-and-a-half days a week.
Drayton says she feels the community meeting was a success - but more work needs to be done.
"It's really clear [the Ministry of Education] is working very closely with the school and everyone is taking it really seriously," she told Newshub.
"But there's still some uncertainty - the school reassured us they're working as quickly as possible to get the students back because they are the most important factor but there's no certainty on that."
The Ministry of Education has promised prefabs will be brought on site - but there's no promise of when.
"Probably not as soon as people would like but probably by August, we should have those on ground."
She says it's "absolutely crucial" students are able to return to school.
"It's a human right to live and work in buildings that are safe and not making us sick. Hopefully we can get some traction and a time frame on this."
On Thursday a spokesperson for the Ministry for Education told Newshub alternative learning spaces are available.
Kim Shannon, the head of education infrastructure service at the Ministry of Education, says she recognises the situation as "challenging" for students and staff.
"Three alternative accommodation options are up and running that can host around 200 students, and are all within a short walk of the school campus.
"The affected areas of the school have been deep cleaned, overseen by an occupational hygienist. The gym and student centre are already back in use."
