High school students in California can pre-register to vote when they are 16 or 17 years old. Students who pre-register are automatically registered to vote when they turn 18.
But according to a new analysis released today by The Civics Center, as of February 2019, only 14% of 16- and 17-year olds in the state are pre-registered to vote. The Civics Center is a nonpartisan, nonprofit organization that promotes voter registration, pre-registration and civic engagement in high schools.