Moodle is a free and open-source learning management system that is well-suited for differentiating instruction through student-centered learning and interactivity. Research shows that online learning is expanding rapidly in K-12 education, with half of high school classes predicted to be online by 2019 and 45 states having online learning initiatives. Students are interested in online courses for flexibility and control over their own learning. Moodle provides teachers resources to create online courses and activities to engage students.