When does Schoolhouse Rock! return?

Schoolhouse Rock! is a series of animated musical educational short films (and later, music videos) that aired during the Saturday morning children's programming block on the U.S. television network ABC. Theme themes covered included grammar, science, economics, history, mathematics, and civics. Original run lasted from 1973 to 1984; it was later revived from 1993 to 1996. Additional episodes were produced in 2009 for direct-to-video release.