Shmoop University Inc. (popularly known as Shmoop) is a for-profit online educational technology company that specializes in test preparation materials, mental health tools, and learning content for K-12 schools. Shmoop offers free study guides aimed at teens on a range of subjects, including literature, biology, poetry, U.S. History, civics, financial literacy, and music. The content is notable for combining rigorous academic study with a frank voice, irreverent sense of humor, and approachable style that is free of pretense.