A growing number of cities and states are using surveys to collect vital information about school climate from students, teachers and parents. The New York City Department of Education's (DOE) annual survey of parents, students, and teachers is the largest of its kind in the United States. Since 2010, the Research Alliance has been working with the DOE to assess the reliability and validity of the survey's measures. Our new brief, "Strengthening Assessments of School Climate", summarizes our findings and recommendations to date. It also presents a set of broader lessons that have emerged from our work, which can provide guidance to others that are implementing school survey efforts. In addition, it includes a Policymaker Perspective, authored by Lauren Sypek, the DOE's School Survey Director, reflecting on the process of collaborating to improve the School Survey as well as some of the changes that have been made to the survey as a result of this partnership.