In this subtitle the following words have the meanings indicated. “Quality online education standards” means the National Standards for Quality Online Programs: Second Edition (2019). “Sponsor” means a county board, having a fiduciary responsibility for the operation of the virtual school. “Virtual school” means a public school: Established by a county board or multiple county boards under a written agreement under § 4–109 of this article; That uses one or more technologies to deliver instruction to its students entirely or primarily online; and In which the students and instructors participate remotely from separate locations.