OpenStreetMapping is easy and requires little GIS knowledge. This makes it the perfect tool to incorporate into classes. This presentation will examine OSM at California University of Pennsylvania (CalU) by describing the author’s integration into classes. He will also highlight local and international work and discuss using this technology to push GIS Service into the classroom. CalU hold mapathons within classes and a collaborative mapathon with West Virginia University. Finally, there will be a discussion on the best practices of incorporating OSM into courses.