Since the program began five years ago, attendance among chronic truants is now up 33-percent.
"We've seen great results for the work that we've done, focused on elementary and middle school students," San Francisco District Attorney Kamala Harris said. "It's time to move on to high school students because we know that studies have proven that 75 percent of high school students who are truant will end up being high school drop outs, and we know what kind of life that's going to end up being."
The program currently prosecutes parents of chronic truants in elementary and middle schools.
Under the new rules, high school students could also face criminal charges if they have 10 or more unexcused absences.