TIP: Be sure and include contributions and accomplishments, not just job titles.
EXAMPLE: Susan served as Executive Director of the Marin Wilderness Club 1995 - 2010, and under her leadership over 3,000 miles of trails on Mt. Tam were repaired and maintained; 200+ people earned wilderness safety certification; and 1,500+ urban youth had a wilderness experience that resulted in a 25% increase in participant's confidence.