The willingness to admit they were wrong and then taking time to learn the reasoning for the other side of the argument.
The ability to take “no” for an answer
Honestly owning up to their own mistakes. It shows that they weren’t punished for being honest which is important.
Holding doors open for other people, esp. if they’re carrying something.
Saying “please” and “thank you” when appropriate.
Something that stands out to me is when a child is actually bothered just by seeing another child misbehave that’s how you know they’re doing well.