Switched-On Schoolhouse is a comprehensive, Christian homeschool curriculum that features computer-based learning for grades 3-12. This self-paced curriculum is fun, engaging and offers a diverse, vibrant mix of entertaining lessons, assignments quizzes, and more. These interesting and informative lessons are created to captivate students' attention and encourage them to learn. Switched-On Schoolhouse, or SOS, offers five core subjects and a wide variety of electives for students in grades 3 through 12. With features that enhance content and functionality, this award-winning Christian homeschool curriculum offers ease, accuracy, and quality academics. Mardel carries the full line of Switched-On-Schoolhouse curriculum.