You're definitely not a lawyer. There are no charges to file here. I doubt there's any civil litigation possible either. The most you can do is complain to the School Board. The school board will make the call to keep or fire or maybe discipline their superintendent. I doubt they will take any action over the supe helping his son out.file ethics charges
The lesson here is that life is not fair. There will always be those with connections or gifts financial, intellectual, physical etc that will out-muscle you however hard you try. The most you can give is your best and that is it. The rest is out of your control.
If you look closely, this doesn't only represent a lack of ethics on behalf of the supe, but for all of the teachers that responded to his use of influence positively and whoever appointed him to boys state based on his parent's influence. It's what we like to call an "error-chain" where one link collapsing could have broken the chain.
Similar to the report on the USS McCain you can see how there was a chain that could have been broken not only once, but several times and represents a failure of leadership on multiple levels. Training, operational, monitoring, human factors, etc.