Moodle is the most popular open-source Learning Management System in the world. Moodle allows a school to construct an LMS and keep the monetary impact low, or even get away with the free aspects only. Being open sourced, Moodle is constantly being modified and improved, and therein lies both the blessing and the curse. Unlike pay-for LMSs, which offer off-site maintenance and updates as part of the package, Moodle requires a person at the school to be dedicated to maintaining the system. I strongly suggest that the person in charge of Moodle keep it simple and clean, thought this strategy does limit the power of the LMS.