20.—(1) For the purposes of this Schedule, attendance at an institution, or a period of study, is a necessary part of a student’s course only where the authority are satisfied that if the student did not attend the institution, or undertake the period of study, he would not be eligible to complete his course; and, for the purpose of being so satisfied, the authority may require the matter to be evidenced by a certificate given by the academic authority.
(2) For the purposes of this paragraph, “institution” includes an “overseas institution”.