Any teacher who improved his or her academic or professional qualifications and thereby reaches a higher salary classification shall be paid according to such improved qualifications as provided for in this agreement. The onus is on the teacher to give notice to the Division as soon as possible after such credit has been obtained. In giving notice, the teacher must offer documentary evidence that his or her increased qualifications have been registered with, and accepted by, Manitoba Education. When such evidence has been submitted the salary change shall become effective the month following.