In the proposal document released by the ministry last week a charter school for Years 1-5 was put forward.
"By forcing the two Maori schools to merge - it means they have kids for the charter school.
"These are our children, not the minister's. She cannot have them for her experiment."
Mr Martindale said the two schools have little in common and merging them would be like trying to combine a Catholic Diocese with a Jewish synagogue.
"The only rationale for the merger provided by the minister was that the two Maori schools are geographically close to each other.
"It seems to me there are 31 schools in Christchurch experiencing a new form of colonisation.
"The schools are being disenfranchised, forced to assimilate, to abandon their cultural histories and gathering places."
Both schools lodged complaints with the Waitangi Tribunal against the ministry and will reject the proposal in a letter to the ministry.