The State Indicators Database (SID), which is the School Finance Indicators Database's (SFID) primary product, includes approximately 125 variables, but this report focuses on three key school finance measures: fiscal effort, adequacy, and progressivity. This report discusses how states' systems tend to mediate the impact of economic downturns and offers general guidance as to what we can expect as the impact of the current crisis continues to unfold over the next few years. This report includes recommendations as to how policymakers, journalists, parents, and the public can use this data and results to summarize and assess the performance of state school finance systems. [For the second edition, see ED606197.]