1. In my opinion, Neil transformed the most. He was the perfect child, did everything he was told, sacrificed what he wanted so his parents could plan the rest of his life. But when the play happened, Neil decided he wanted to act more than he wanted to please his parents, even if it meant a fake letter

2. Charlie was definitely static, as he constantly found a way around rules or straight up broke them. like when he sent that letter to the administration then turned himself in (somewhat).

3. Keating was a good teacher, and a better man. He knew that the kids at the school were there for one reason: the parents planned their lives. So, he went off the norm. Was he changed? It's possible. Anyone would change after someone they knew shot themselves.

4. Todd: His biggest fear was being useless all the time. he constantly felt it. He conquered it When he decided to stand up for Keating at the end of the movie.

    Neil: His biggest fear was his parents and their dis-approval. He failed to conquer it because when push came to shove, he couldn't tell his parents how he really felt. (doubt they would've cared)

    Knox: His fear was being alone, forever. He conquered this fear by having the guts to ask a girl out, even when her boyfriend HATED him.

    Charlie: He was afraid he'd become just like everyone else, another face. so he did everything he could to make sure that everyone knew he wasn't just another face.