Upon commencement of the sixth (6th) day of extended substitute teaching, a substitute teacher shall be paid for each day taught at the per diem rate (to be calculated as 1/x of the salary to which a teacher of the same qualifications and experience would be entitled under the basic salary schedule of the current collective agreement, where x = the number of days in the current school year.
This rate of pay shall be retroactive to the first day of the extended teaching assignment and shall continue in effect until the end of that instance of extended teaching assignment. Such period shall not be interrupted because of in-service or administration days on which a school is declared closed by the Division or on which a substitute is not required to teach because of a school or division activity and such days shall not constitute a break in consecutive days.