This story is horrible but this is not bullying.
As far as bullying goes "stopping" bullying is like trying how to "teach" men not to rape. It's a ridiculous notion. Teach your kid to stand up for himself and to quit being a pussy.
I was also bullied. Kids tried to shove my head in the toilet, beat me up every time I'd go to the bathroom, and generally fuck with me all day. It was miserable.
In the 4th grade I came home with a few bruises and my dad asked me what happened. I told him and he told me that I needed to defend myself.
The next week, after another round of humiliation in the boys bathroom, I came home with a black eye. This time he was pissed. He brought me to the back room of our house where he kept his guns and deer trophies and made me punch his hand. It was was weak. He showed me how to put my weight into it and a few tips on throwing a good punch. He told me to hit the kid bullying me as hard as I could on the end of the nose, and, to hit him again immediately and to keep hitting him until he was on the ground.
He then promised if I let these kids beat me up again that I would have to deal with him instead. I knew what that meant and it probably involved his belt.
The next day I went to school and in the bathroom one of the kids blocked the door and said that I couldn't leave until I gave him money. I said no and some talking went on and then he pushed me around a bit. Stopping for a moment, he looked to the other bully in the hall through the door and I hit him on the cheek as hard as I could. (I was too scared to punch him in the nose and make him bleed like my father told me). He hit the floor. I ran and he got up and chased me down hall pushing me into a locker.
A teacher ran up to us and asked what's going on and I said "nothing". She saw the other kid's cheek was red and asked if we were fighting and I put my arm around him and said "No Mrs.So-and-So me and Phil are friends". He followed my lead and we talked our way out of it arm in arm. After she left he just walked away.
After that Phil and I really were friends and we still are (sort of, I haven't seen him in years). I still got fucked with a little that year but nothing like before and after I beat one other kid up for knocking my books out of my had it completely stopped.
You might be thinking "anecdotal evidence!" but it's not. You hear this many times and it's often a theme in hollywood movies. The plot is popular because it's true. If you hit a bully and show him you're not scared you might get beaten up but you'll get respect. If you win you'll get more. You might even become friends.
This country is raising a bunch of cowards and "denounce violence" pansies. If you didn't know, violence makes the world turn. Government upholds law and order under the threat of violence. Whoever has the best violence (military or wepons) is the most powerful. You don't obey the law a police officer comes to your door. If you can overcome his violence his friends come with more violence. If you beat them the National Guard will come with soldiers and tanks. You will surrender, escape, or die. Governments have the most violence.
A quote from Gary Halbert in "The Boron Letters" says "There is no justice, only power."
I realize this has nothing to do with this disabled kid, I was responding to the subject of bullying.
Gavin Mcinnes has some good stuff to say about national bullying week. In short, it's foolish and even detrimental to young men. Watch.
EDIT: Typos, grammatical errors.