More than 1.5 million K-12 students in the United States engage in online or blended learning, according to a recent report. As of the end of 2010, 38 states had state virtual schools or state-led online initiatives; 27 states plus Washington, D.C., had full-time online schools; and 20 states offered both supplemental and full-time online learning options statewide. Online learning has expanded the range of courses available to students, especially in small, rural, or inner-city schools. The report provides snapshots of a variety of effective online programs. This article talks about online learning and presents resources for online materials.