An Auckland secondary school will be almost completely rebuilt as part of a record-breaking $79 million redevelopment.
Western Springs College will receive the sum to redevelop its buildings and that of the Auckland Performing Arts Centre on its grounds.
At least 80 percent of the existing teaching spaces will be replaced entirely, a new gymnasium will be built and the hall and administration block will be upgraded.
Two new teaching blocks will be built, allowing for a 25 percent roll growth from about 1300 to 1700 students.
TAPAC will receive $4m of the total investment fund to address weather-tightness.
Associate Education Minister Nikki Kaye says Western Springs is one of the country's highest performing schools and is in a strategic location servicing the Western Bays and surrounding areas.
It is the largest-ever school investment in New Zealand.
The school had faced considerable geotechnical challenge, as it was built on a former quarry and landfill.
That combined with ageing buildings and weather-tightness issues had made it one of the most complex school redevelopments undertaken in New Zealand, she said.
"It's taken a bit longer to get to this point, but the scale and complexity of the issues involved meant we needed to do things properly," she said.
Construction work is expected to start in late 2016 and take until the end of 2018.