The WPA Adult Education program of the 1930s and 40s teamed with New York City's Board of Education to sponsor free English classes to help parents “learn to speak, read, and write the language of your children.” In addition, naturalization classes and “special classes for educated foreign born” are advertised on this Yiddish and English poster.
Free classes in English!: Learn to Speak,
Read & Write the Language of our Children.
New York City: Federal Art Project,
Prints and Photographs Division
Sources:Library of Congress