High Quality Content by WIKIPEDIA articles! Wairau Valley is a suburb of North Shore, one of several cities in the Auckland metropolitan area in northern New Zealand. The area is predominantly light industrial/commercial. New Zealand State Highway 1 passes to the east and the Wairau Park shopping complex extends to the north. Wairau Valley is part of the Glenfield North census area.Wairau Valley School is a coeducational special school with a decile rating of 9 and a roll of 94. It caters for students up to 21 years old with intellectual disabilities. It shares a site with Glenfield Intermediate.