The modern Distance Learning System over Satellite and Ground Wired Network provide a multimedia study environment and unlimited learning opportunities to every one. Learning on demand has already become an efficient and popular learning mode. So far, many Learning on Demand Systems based on IP Network have been implemented and applied, such as real system, media server and IBM Learning Space, etc. However, neither can they meet the user?s reservation request for education resources, nor can they provide resource optimization scheduling scheme when a good deal of people want to play the same kind of education resources at the same time. In this paper, we propose a new and practical resource reservation and scheduling algorithm for Learning on Demand based on Satellite and Ground IP Network (RODS for short). In RODS, firstly, users provide the request of resource to Server Station via ground internet, then RODS employs the Improved Maximal Queue Length (IMQL) algorithm to schedule the reservation requests and then generate an optimized sending scheme of multimedia courseware. According to this scheme, RODS sends the corresponding resources to the remote sites via satellite transmission. The prototype of RODS has already been implemented and tested on the platform of satellite and CERNET (China Educational and Research NETwork), and the algorithm was proved to be efficient, flexible and practiced in supporting Learning on Demand.