(a) Each certificated aviation maintenance technician school shall keep a current record of each student enrolled, showing --

(1) His attendance, tests, and grades received on the subjects required by this part;

(2) The instruction credited to him under §147.31(c), if any; and

(3) The authenticated transcript of his grades from that school.

It shall retain the record for at least two years after the end of the student's enrollment, and shall make each record available for inspection by the Administrator during that period.

(b) Each school shall keep a current progress chart or individual progress record for each of its students, showing the practical projects or laboratory work completed, or to be completed, by the student in each subject.