Most efforts to end bullying -- the PSAs, assemblies and high-level policy discussions -- come from adults.
But what if students had a say?
In 2012, Princeton psychology and public affairs professor Elizabeth Levy Paluck and her fellow researchers decided to test that idea: They gave the students the power to tackle bullying, almost on their own.
And the researchers found that in the schools where more popular students joined a program that asked them to make their school a more positive place, all students were less likely to be disciplined for bullying and other conflicts between students. Their...