I've often heard character defined as how we act when no one is watching. Good character is crucial to becoming a good citizen and a productive member of society.
Children learn good character behavior first and foremost by observing how trusted adults behave, such as when a store clerk accidentally gives them too much change and they give back the excess, or when the adult fulfills an obligation when they'd rather be doing something else.
There's an education effort afoot (see Time magazine article) to help students develop character and prepare to be good citizens. Spearheaded by former Clinton White House official and author Eric Liu, the budding movement seeks to enhance academics by teaching students the value of "working hard, sticking with it, respecting others, and finding solutions during conflict."
The goal is to get parents and schools working together to develop character and maximize student success.
This article references other studies that show the importance of character, such as articles in Psychological Science and the Journal of Personality and Social Psychology that report that self-discipline and perseverance have major impact--as much as double the impact of IQ--on grade point average.
As James Baldwin has said, "Children have never been very good at listening to their elders but have never failed to imitate them." I have long been an advocate of character education. Unfortunately, attention to this movement seems to wax and wane, so I am happy to see that it is again receiving the attention it deserves. Let's give students role models worth imitating.