We report on the experiences of conducting a major nationally representative survey during the Covid-19 pandemic. In the spring of 2020, fieldwork was underway for the 2019 wave of the Child Development Supplement (CDS) to the U.S. Panel Study of Income Dynamics (PSID). The Covid-19 pandemic halted a major in-person component of data collection and created significant work disruptions, threatening the study’s success. In the fall of 2020, the study was able to relaunch data collection and collect a new Covid-19 module to understand the medium-term effects of the pandemic on children and families. We describe the disruption to the fieldwork operations and the final fieldwork outcomes, analyze the completion of study components prior to the spring shutdown and in the fall follow-up, and analyze the substantive results with a focus on the effects of the Covid-19 pandemic on children’s behavioral problems, primary caregivers’ mental health, and family food insecurity.