The Ministry of Education is reviewing its security arrangements at the old Wanaka Primary School in Tenby St.
At least 24 windows were broken by rocks and bricks last Saturday afternoon and police have been interviewing a group of 12 and 13-year-olds.
A ministry spokeswoman told the Otago Daily Times yesterday broken windows had been boarded up and, while a quote was being obtained, a decision to reglaze had not yet been made.
Asked about progress towards the sale of the property, the spokeswoman said the school was now being "re-offered" to Ngai Tahu pursuant to the Ngai Tahu Claims Settlement Act 1998.
In response to questions raised by neighbours about the former school being "overvalued", the spokeswoman said professional advice had been sought from "property experts with good local knowledge".
She would not provide a detailed valuation because it was commercially sensitive.