The allowance for additional qualifications as recognized by the Manitoba Education shall be paid to a teacher effective from the first day of September of the calendar year in which evidence is filed with the Secretary-Treasurer that such qualifications have been obtained. A statement from the Manitoba Education showing classification shall be accepted as evidence. The onus of supplying the Division with satisfactory proof of additional qualifications rests with the teacher concerned and such evidence must be submitted to the Division not later than December 31st.