This document discusses online learning in K-12 schools. It defines course/learning management systems and describes how online learning can engage students, provide instruction tailored to each student's level, and develop 21st century skills. It also notes that online learning allows students to interact and collaborate outside the classroom. While some teachers may resist due to lack of experience, online learning has been shown to help students learn and can be implemented easily with tutorials. Examples of online learning sites for elementary students are provided.