The character traits that comprise "good character" or "strong character" vary, depending on the source list. However, character traits lists tend to include a core set of character traits that come from the core values most organizations, religions, and cultures can agree upon.
Character education programs teach from a list of character traits that are built on non-controversial core values.
Talking with Trees' list of character traits for character education
Common core values extracted from several lists of character traits:
Character Counts!* list of character traits, or Six Pillars of Character*:
Trustworthiness (includes honesty)
Caring (includes compassion and forgiveness)
Character Counts Pillars of Character
Character Education Partnership character traits list
More on Character Education Partnership.
US Department of Education, list of character traits necessary to be a responsible citizen:
Honesty and fairness
Respect for others
Citizenship and patriotism
More from US Dept of Education
Core values from US Constitutional Democracy
These are the core values the Founding Fathers looked to as they structured the US Democracy. These core values are what American society was built on. We derive many of our lists of positive character traits from this foundation of core values.
The pursuit of happiness (includes respecting other's rights to pursue happiness in their own way)
Common good (includes acceptance of responsibility for the welfare of the community)
Justice (includes fairness)
Equality (includes fairness)
Truth (includes honesty in all its aspects)
Thanks to PBS for information on these core values.
*Trademarks are the property of their respective owners.