Was it good or not?
What the movie was about.
Undefeated is a story a low grade high school football program. The team is full of kids that have a hard life and are hard to coach. This year is now different and the kids and the coach learn a lot throughout their best season.
In practice there was a much more smooth flow. Everyone did what they were suppose to and was more disciplined. Overall the kids became more respectful and were able to be coached compared to the beginning of the movie.
At the end of the season everyone learned how to respect themselves as well as each other. There was no longer any internal or external conflicts and the team had came together as one.