Graduation rates can be calculated based on the number of seniors still enrolled in school on the date of graduation, compared with looking at a cohort that began freshman year four years earlier or even looking at the number of seniors enrolled at the beginning of the year.

FORBES: Magazine Article

It is called "Roadmap to Graduation" and to date 100% of students in that program have graduated.

WHITEHOUSE: Helping Solve the Puzzle of Youth Homelessness