Schoolhouse Rock! is a series of 46 educational shorts featuring rock songs about "schoolhouse" topics, including grammar, science, economics, history, and politics. Originally conceived by Thomas G. Yohe in 1972, the shorts were broadcast on ABC television affiliates between 1973 and 1986. They were then broadcast on occasion throughout the 1990s and part of the 2000s. An additional short, I'm Gonna Send Your Vote to College, was created for the 30th anniversary video release.