Recently, educators and policymakers have taken steps to improve high school graduation rates. Their efforts have already led to a record 83.2 percent graduation rate in 2016 and a 40 percent reduction over the past decade in the number of high schools graduating less than 6 in 10 students. Yet significant challenges for high schools remain. Research has shown that 40 percent to 60 percent of first-year college students require remediation in English, math, or both. Many innovators around the country are questioning and rethinking fundamental assumptions about the high school experience. While their motives may vary, these innovators share one overarching goal: to do a better job graduating students who are fully prepared to succeed after high school. This issue brief describes the current movement to redesign high school and it suggests ways in which state policymakers can support innovators--from removing barriers posed by current laws and regulations to soliciting and supporting on-the-ground redesign efforts.