In the three decades from 1910 to 1940, the fraction of U.S. youths enrolled in public and private secondary schools increased from 18 to 71 percent and the fraction graduating soared from 9 to 51 percent. At the same time, state compulsory education and child labor legislation became more...

By the mid-nineteenth century school enrollment rates in the United States exceeded those of any other nation in the world and by the early twentieth century the United States had accomplished mass education at all levels. No country was able to close the gap until the last quarter of the...