Virtual school libraries in the United States
A virtual school library is a PreK-12 library that is a subunit of a virtual school—using the same telecommunications network to provide equitable access to electronic resources and communication designed to support the school's curriculum. According to Watson and Ryan, PreK-12 virtual school enrollments in the United States were growing at a rate of 50% annually in 2007.
Source: Wikipedia — Virtual school libraries in the United States (CC BY-SA 4.0)