The school would normally celebrate the anti-bullying Pink Shirt Day at the end of the week - it's on May 26 - but this year it coincided with the school cross-country race.
As part of bullying-free week, students were encouraged to carry out random acts of kindness, for which they could be nominated for a prize.
Constable Paul Miller, school community officer with Whanganui Police, said bullying-free week was an annual event.
"It's an opportunity schools and their communities to raise awareness and promote a safe and inclusive learning environment."
Mr Miller is supporting Okoia and other schools with their week's activities and Pink Shirt days.