Take it with a grain of salt, but Google translate says tere ora means "quick life" in Maori, which would correspond with the name being borne by 9 people in the world, all from the Cook islands. It's most likely they were named after the school.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080