Wellington City Council has identified 16 schools in the city with buildings which are less than 34% of the current building standard for earthquake resistance.
One, Island Bay School, has five buildings in need of strengthening, Rongotai College has four and three other schools have three buildings each in need of strengthening.
Wellington East Girls' College in Mount Victoria closed its main block on Thursday.
An independent engineers report, commissioned by the Ministry of Education, found that both the main block and school hall are below the standard required. The main block was 17% of the standard.
Principal Sally Haughton said the board's tolerance to risk has significantly changed since the Christchurch earthquakes.
Wellington East Girls' College with two buildings, Island Bay School with four, and Rongotai College with four buildings, including its assembly hall, its sports hall and two double storey classrooms.
South Wellington Intermediate School in Newtown, St Patrick's School in Kilbirnie and Johnsonville School all have three buildings on the list.
Queen Margaret College in the central Wellington suburb of Thorndon has two buildings on the list including its hall, both the library and the hall at Thorndon Primary School are also in need of strengthening.
Halls at Wellington High School and Onslow College in Johnsonville also need repair.
Houghton Valley School and Newtown School both have two buildings in need of repair.
Clyde Quay School in Mount Victoria, St Bernard's School in Brooklyn, Te Aro School in the central city, and Westpark School in Johnsonville all have one building in need of strengthening.