Some classes Wellington East Girls' College students will be held at a nearby boys' school and a church for several weeks next term, after the school closed its main block due to earthquake risk.
The nine-classroom block and the school hall have been found to be below the standard required to withstand a moderate quake.
The school is awaiting an engineer's report that will determine whether the buildings should be demolished or strengthened.
Principal Sally Haughton would prefer the buildings were kept because she says they are an important part of the school's culture and tradition.
She says students will have some of their lessons at Wellington College and St Joseph's Church until relocatable classrooms arrive later in the year.