The Condition of Education in the Commonwealth project is one way the Rennie Center fulfills its mission of producing non-partisan and independent research that promotes improvement in public education for all Massachusetts children. Its principles include: (1) Education encompasses more than academics; and (2) Schools should not--and cannot--work in isolation. In this report are research-informed recommendations for statewide actions--policies, investments, and expansion of best practices--that have potential to address performance gaps and contribute to broad improvement in student outcomes. It also looks at progress made and remaining challenges and suggests strategies on how to apply those lessons to foster the success of all Massachusetts' learners. [To view the 2017 report, see ED589401.]