The move to reopen schools for senior students at the start of next week poses a significant risk for increasing case numbers, says a government adviser.
Secondary school students in Years 11-13 who live in alert level 3 areas will be able to return to the classroom from next Tuesday.
Dr Dion O'Neale is a physicist and contagion modeller with Te Pūnaha Matatini, a group of experts funded to provide advice on the Covid-19 response.
He says that while reopening for students presents opportunities for some, it risks making things worse for others.
He spoke to Susie Ferguson.