Diane Sawyer spent months inside of Strawberry Mansion High School in Philadelphia. The school is considered to be one of the most dangerous schools in the city. 96% of the school's students live in poverty. Linda Cliatt-Wayman was an administrator for the city of Philadelphia public school system, and took on the job as principal when she could not find anyone else to fill the position. In her two year tenure, she's precipitated a remarkable change. In just a year, the number of seniors heading off to college doubled.
Watch the story of her school below: