The Cranston, Rhode Island schools have banned their annual father-daughter dance because they say it discriminates against kids with single mothers.

The superintendent says a single mother complained to the ACLU that her daughter hadn't been able to go to the dance. And under Rhode Island state law, that's classified as illegal discrimination.

Based on Rhode Island law, all events have to be open to both genders without any restrictions.

It's not clear if the girl was actually banned from the dance because she couldn't bring her father, or whether it was just a situation where she didn't want to go or feel comfortable going solo.