Khan academy is excellent in the hard sciences. Bullying and gossip and hate speech are problems that can be tackled with education. Khan Academy has some good psychology tucked in in higher level areas. But there is a lack of current events and controversial topics for kids. I'm not proposing the community push for political change (other sites are better suited for that). But an awareness of the change in the world around us that is happening would be helpful to children. Especially if it could be presented in a loving and non-judgmental way. Children are being pressured to be transparent about their newly discovered thoughts and feelings, then made fun of. They don't understand when they share these on the internet how devastating it can be to friends who thought they would keep secrets.  We are the adults who can teach them. Lets do it.