I don't think anyone aside from a cyberbully would argue that cyberbullying is bad. It can cause serious trauma for the bullied kid. And because it happens online it isn't confined to school, but can reach right into your home.
Parents, kids and schools need to work together to stop bullying in any form. However, some schools might be going a bit too far.
A law that went into effect this year in Illinois allows schools to demand students hand over social media account passwords. The only thing the school needs is suspicion that the account was used to bully another student, even if the bullying was done outside of school hours and off school grounds.
Actually, the language of the law says the student just has to violate school policy. While schools are focused on bullying right now, I don't doubt they could come up with other reasons to demand passwords in the future.