No. Some Service-Learning courses are more general and focus on a broad view of service and leadership; the sites to choose from vary by subject area.  Other Service-Learning courses are issue-based, which means that the course focuses on one specific issue, and the service sites are related to that issue.  Other Service-Learning courses are project-based, which means that the service is not necessarily contained to one site, but may span across sites in order to complete a specific project.