My five year old can be challenging at times. She just started kindergarten this year and has improved with her behavior some, but still makes bad decisions that she knows better than to make. She can be disrespectful to adults at her school and think nothing of it. I don't understand! She is very strong willed and confident and maybe a little too confident at times! Any suggestions?
In general, kids are often looking to test boundaries of grab attention.
So two basic principles are 1) to establish transparently clear boundaries, as in listing a very short, limited set of words that are not acceptable at home; and 2) to keep emotions and attention to the minimum in response to behavior you want to limit and instead reward good behavior.
You can also let her be in charge of herself and ask her to find herself, be proud of herself, be better than before, the best she can. This type of 'ownership' of her own behavior might put it in a different perspective.
Otherwise, there's a 'character development' set of tools that can be useful: there's books, cards, etc. with short stories about honor, respect, patience, perseverance, teamwork, etc and how they are valuable.