To provide further historical context for the statistics being measured in the profiles, this timeline highlights major periods of prolonged economic downturn, periods of military action, and periods when U.S. troops were drafted as a part of military action—as well as major pieces of federal legislation. This timeline also includes summaries of these events and acts, with a particular focus on how they could have disrupted the nation’s social life and schooling or impacted education across the country.
This timeline has been incorporated onto the x-axis of each figure for visual reference. A pop-out window for each figure also shows the relevant events in more detail.