Wanganui Girls' College assistant principal Prabh Mokha said the school jumped at the opportunity to offer the Loves-Me-Not programme to its students.
"It's really important to ensure that young women are empowered and grow up to be empowered older women," he said. "That's the key age where students have the emotional understanding to follow the information, and it's not too late for them to be able to adapt," Mr Mokha said.
He said the programme focused on the characteristics of positive relationships, such as being collaborative, being supportive and being understanding rather than negative.
"It's about healthy relationships. What does a future awesome relationship look like? It's not a scaremongering thing."
Subjects include barriers to healthy relationships, what consent is and how to help others.
It proved popular enough for the school to decided to offer it to its Year 13s as well.
"The girls thought it was really, really good," Mr Mokha said.
Constable Paul Miller, one of two school community officers in the city, said it would become an annual programme for schools. Wanganui High School was also booked in for next term. Mr Miller said teenagers who had grown up in a household with family violence may not know what a healthy relationship was. "We see that from a police point of view by attending different incidents. This programme shows boys and girls what a healthy relationship looks like."