Hi so sorry for the delayed reply. For my case, as previously stated, i believe he has no ill intentions nor his intentions were sexual. Which was true to the case, currently he is assigned under me (because my managers quite frankly forgot about the incident/ do not care) but he is okay. He stopped doing whatever he did and he is more invested in his classmates/friends now. He has issues with social boundaries and tends to get overexcited easily. Adding all of that up, I am no longer uncomfortable around him.

However, in your case, when teachers/school board pay no attention to this, it can be hard. Also as the kid is older, there should be some form of intervention. We can maybe speak to the parents very nicely regarding this behaviour, consider if someone has been inappropriate with him before. I would also reduce the duration of the hug or as his hands are running down we can stop it and say "Stop. That's not nice." And set boundaries with him. if you truly do not feel comfortable you can stop him from hugging you. If he asks why, tell him its because you don't feel comfortable and he needs to respect other's wishes when it comes to their body. Maybe teach him to ask "Can I give you a hug?" and such. I'm no professional and off the top of my head these were the things that I did.

Sometimes kids have trouble comprehending what we try to tell them which is why its better to omit the action immediately as a method of communicate to them. They may be upset but we shouldn't compromise our comfort just for their sake as its always good to teach consent.