Class piano has been a subset of piano pedagogy that has been growing in popularity since its establishment 200 years ago. The purpose of this literature review was to synthesize the research and materials related to the history of class piano and its function in (a) K-12 school settings, (b) collegiate student settings, and (c) adult student settings. Results from previous studies suggest that class piano has benefits for students such as increased musical creativity and motivation. Previous studies also indicate that it is important for class piano teachers to successfully handle the aspects of a group class and be aware of goals and resources among different age groups. Further evidence suggests that although there are a considerable number of resources in collegiate class piano teaching, there is less available in K-12 school settings. Based on these findings, I offer recommendations for potential and current class piano educators of all levels.