The call for higher, more rigorous standards and increased global competitiveness have made the traditional school day and calendar largely insufficient to ensure that all students graduate from high school with a diploma and ready for college. Expanded learning time, a schoolwide strategy that entails redesigning and lengthening the school day and/or year by at least 30 percent to help support teaching and learning for all students, can be particularly beneficial for low-income students, minority students, and English language learners.