It's been a long time since I saw the movie, but wasn't there a scene where Auggie and his school were at some event, and when older boys from some other school picked on him, both Jack and Auggie's former bullies defended him? And didn't the former bully show up to support him at the end of the movie?
Yes, the bully's parents were to blame, especially the mother, but the bully himself atoned for his former behaviour.
you are correct.
The bullies DID atone for their actions...... which was honorable in the long run.
I liked the fact that Jack didnt automatically dismiss Auggie on the initial meeting.
I think the school should have been a bit better on judging the kids that first met with Auggie and showed him around the school. Having other kids like Jack would have been helpful to give Auggie other reinforcement besides Jack and at the same time Jack would not have had peer pressure from other kids who got to know Auggie and befriended him.
Most teachers know many of their students well enough to know who the bullies are and who the "self absorbed" kids are as well as those who are more likely to stick up for the underdog (so to speak).
The lesson here is when cool kids band together, there is reinforcement against bullies and kids "in the middle" can feel better about siding in with a supportive group.
Jack didnt want to feel like an outcast but he learned that you cant be faithful to both sides. You must take a stand. Its good to see that others followed.