Effective September 1st, 1994, the parties agree that, as a general principle, mandatory student contact time performed by the teachers within the Division, whether such time is in a teaching, consultation or supervisory role, shall not be increased during the term of this Agreement. The Division shall make all reasonable efforts to assign contact time such that it shall generally be in keeping with the Divisional average for the appropriate level and shall make such assignments as equally and/or equitably as possible among teachers within the applicable levels and functions. However, the parties also agree that the student contact time assigned in any particular school year to any individual teacher in any particular school may be greater or lesser than was the case during the previous school year. Any issue as to the reasonableness of particular assignments of contact time shall be subject to the grievance and arbitration provisions of this Agreement.