Online learning at the K-12 level is growing exponentially. Students learning in supplemental virtual schools and full-time cyber schools, using a variety of delivery models that include and sometimes combine independent, asynchronous, and synchronous instruction, in almost every state in the US. In some instances the knowledge, skills, and abilities required by teachers in this technology-mediated environment is consistent with what they learned about face-to-face teaching in their teacher education programs, while in many instances, the two are quite different. Presently the lack of empirical research into effective K-12 online teaching limits teacher education programs. However, teacher education programs still need to better prepare pre-service and in-service teachers to design, deliver, and support students engaged virtual schooling.
Barbour, Michael, "Training Teachers for a Virtual School System: A Call to Action" (2012). Education Faculty Publications. Paper 102.