Research Findings: The amount and quality of communication between staff and guardians in child care centers was examined using extensive naturalistic observations. Interactions between staff and more than 1,000 guardians who dropped their child off at their child care center were captured through a series of 20-s time-sampled observations. Structural quality indicators (ratios, staff education, etc.) were used to predict communication. Associations between staff-guardian communication and other aspects of quality were also examined. Results: Guardians spent an average of 63 s in their child's classroom during morning drop-off. Communication between staff and parents was limited, with staff providing child-related information to or soliciting it from approximately 15% of guardians. Out of several structural quality indicators, only greater professional development hours among staff in a classroom increased the likelihood of staff providing guardians with information about the program. Drop-off communication between staff and guardians and between staff and children was somewhat related to other measures of process quality. Practice or Policy: Results are discussed in terms of the importance of connecting families and centers, implications for rating center quality, and the accuracy of the drop-off period as parents' lens into the quality of their child's classroom. (Contains 1 footnote and 4 tables.)