With support from the Silicon Valley Community Foundation (SVCF), the San Mateo County Office of Education has launched a new initiative to align preschool to third grade (P3) curriculum and instruction. Research shows that gaps in learning are more likely to develop when a student’s early childhood experiences are fragmented between preschool and early grades. By improving the alignment of preschool to third-grade curriculum and instruction, educators can provide smoother grade-level transitions and support positive student outcomes to close opportunity, access, and achievement gaps.