Maryland Code, Education § 7-1403

(1) Access to a sequential curriculum approved by the State Board that meets or exceeds the standards adopted by the county board in the county of the virtual school's principal place of business;

(2) The same length of time for learning opportunities per academic year that is required for public school students, unless the virtual school can show that a student has demonstrated mastery or completion of the subject area;  and

(3) Regular assessment in the core areas of instruction as required by regulations adopted by the State Board under § 7-1408 of this subtitle.