Vandals have targeted Banks Avenue School twice this week, destroying fences, and gardens planted by children to spruce up the site.
The school's grounds were badly damaged by the earthquakes and liquefaction ruined several gardens.
However, those gardens were tidied up and replanted last year using money raised by parents and donations given to the school after the quakes.
When staff and pupils arrived on Monday, they found the grounds littered with plants ripped out of those gardens.
Banks Avenue School principal Murray Edlin said three-metre-tall sunflowers planted next to two classrooms were also bent and ripped from the ground.
"They were planted by the kids last year and when they came back to school this year, the sunflowers were as tall as the buildings. Then some clowns go and yank them out," he said.
Edlin said one or two children had been in tears.
Overnight on Tuesday, vandals returned to pull out more plants, and ruin fencing surrounding one of the school's damaged buildings.
- © Fairfax NZ News