For years, students in foster care have been among the most transient in the nation, enduring sudden, sometimes frequent school changes as they move from home to home. The lack of school stability contributes to those children's academic struggles: Students in foster care are more likely than their peers to score lower on assessments and less likely to graduate high school, especially within four years. Similar to its provisions regarding homeless students, the Every Student Succeeds Act (ESSA) emphasizes school stability for youth in foster care and gives states a lead role in ensuring these students benefit from the support of a familiar school environment. State boards of education are uniquely positioned to minimize the obstacles to success for the nation's quarter million students in foster care. This policy update is part of a series that suggests strategies that state boards of education can use to address the challenges and inequities facing some of the most disenfranchised, at-risk student populations in the country. [For the other policy updates in this series, see "ESSA and Homeless Youth. Policy Update. Vol. 23, No. 18" (ED571531); "ESSA and Migrant Youth. Policy Update. Vol. 23, No. 19" (ED571524); "ESSA and Students with Disabilities. Policy Update. Vol. 23, No. 20" (ED571526); and "ESSA and English Language Learners. Policy Update. Vol. 23, No. 21" (ED571532).]