Online learning study

K12 Online learning grows
More than 40 states have official K-12 online-learning programs, and in almost half those programs student enrollments are growing at a rate of 25 percent annually, says a study by a team of educational institutions. The report also says that 59 percent of online-learning programs operate in most of the school districts within a state. The data for the report are based on 82 Web surveys completed by the members of various online-learning programs and on interviews with state education agencies.
Evergreen consulting Associates. (2007). Keeping pace with K-12 online learning. Vienna, VA: North American Council for Online Learning.
http://www.nacol.org/docs/KeepingPace07-color.pdf