All three of Darren O'Brien's teenage daughters have been bullied at school. He said they have been shoved into lockers; one was surreptitiously recorded, he said, and another told to kill herself.

O'Brien, a 38-year-old paper mill employee, said he pleaded with school principals, teachers and a guidance counsellor to find a way to stop the abuse, but none of it had made much difference.

Now he is hoping a novel proposal in the city of Wisconsin Rapids, Wisconsin, where his daughters go to school, will help stem harassment in the district: making parents pay up to US$313 (NZ$475) in