Language and literacy skills are critical to success in school. For low-income preschoolers, increasing early literacy and math skills is vital to closing the achievement gap between them and their more advantaged peers. New research shows that an intentional curriculum and professional development and supports for teachers are important components of effective preschool classrooms and programs. A special focus on these strategies is important because many low-income children in early learning settings fall behind early and remain very much behind their peers in reading and math. This brief provides a blueprint for state and local policymakers, early learning administrators, teachers, families, community leaders, and researchers to use effective preschool curricula and teaching strategies to help low-income young children close the achievement gap in early literacy and math to be ready for kindergarten like their more affluent peers. (Contains 9 endnotes.)