67 and smaller class sizes.68 Evidence of the benefits of these practices suggests that they should be extended more widely into the elementary grades. A second source of knowledge about effectively connecting education across the preschoolgrade 3 span comes from educational innovations now being piloted. Schools that encompass these grades and thoughtfully consider how to increase continuity, alignment, and coherence are emerging around the country, and some are being studied by researchers.69 Expansion of P–16 or P–20 commissions around the country, although not yet giving much attention to prekindergarten