Bullrush and other potentially bruising activities are returning to play as research points to the long-term benefits of scraped knees and the odd broken bone.
The moves aim to counterbalance a health-and-safety culture which has seen playgrounds remodelled, particularly overseas where litigation fears have killed off tall slides and seesaws.
Principal Scott Thelning re-introduced bullrush when he was at Christchurch's Mt Pleasant Primary. He's now at the city's Cobham Intermediate, and from Friday, pupils there will be playing the NZ classic.
The game will be monitored by a teacher at first, but eventually children will be able to play unsupervised. A letter will explain the situation to parents and mouthguards will not be compulsory.
"One of the lasting memories of primary school I have is the day I tackled the biggest kid and just dived at his legs and hoped for the best," Mr Thelning said. "We are always talking about encouraging our students to be risk-takers ... and then we ban and limit things and mollycoddle them ... How do they assess risk if we don't let them?"