My son is going through tough time at the moment with bullying 

Stand up for people who are bullied. Bullies often want an audience and approval. ...
Take an anti-bullying pledge. ...
Take action. ...
Talk to other kids. ...
Talk to your teachers or principal. ...
Talk to your parents or guardians. ...
Speak (and write) up! ...
Get creative.

Bullying can take many forms, but all forms of bullying cause harm. Even if there is no physical contact between a bully and their target, people who are bullied may carry the emotional damage of what they experienced for the rest of their lives. That is why it is important to put a stop to bullying. If you are being bullied, then there are things you can do to deal with the bully. If you witness bullying, then there are things you can do to stand up for someone else. You can also work to raise awareness among your peers and learn about the different ways that you can ask for help.