A Porirua parent is "lost for words" after her 14-year-old was asked to participate in a colonial-style game which separated children into slaves, chiefs and aliens.
Earlier today she said a Year 10 Aotea College class were instructed to do the activity, which involved selling slaves, land and commoners - for "10 pearls".
Documents show the groups were also asked to attack aliens and rival countries, as well as inviting missionaries to talk to invaders and buy zap guns.
In a statement, acting principal Kathleen Kaveney said the Alien Invasion game was played in the context of a Treaty of Waitangi unit.
"The purpose of this resource, originally obtained from TKI Te Kete Ipurangi and used in other schools, is to engage students and give them some understanding of problem solving and negotiation."