Tuition and mandatory fees may be waived for a student from a foreign country enrolled in a public institution of higher education through a student exchange program approved by such institution, provided that the number of students from a foreign country for whom tuition and mandatory fees has been waived does not exceed during any three-year period the number of students from a foreign country who are enrolled through such student exchange program and who pay full tuition and mandatory fees to the institution.
Va. Code § 23.1-611