New York (State). Education Dept. Bureau of Statistical Services.

In 1918, legislation required all minors aged 16 to 21 who could not speak, read, and write English sufficiently to complete the fifth grade to attend a day or evening school. Employers of these minors were required to obtain from them proof of attendance in classes. Employers could also meet this requirement by conducting classes in civics and English. The same year legislation required all cities and other school districts receiving twenty or more requests from persons over age 16 to hold "night schools."

From the description of Annual reports of adult immigrant education (Americanization) classes, 1921-1937. (New York State Archives). WorldCat record id: 80471098