The Collective Bargaining Agreement is laid out to print single-sided or double-sided, should you need to print a copy for yourself. 1 shall be posted and the same provisions shall apply.The Board of School Directors of the Wissahickon School District (hereinafter referred to as the. (a) The maximum period of probationary employment shall be seven (7) years at. Long Island University. Any reference to "employee" or "employees" throughout this Agreement shall mean bargaining unit employee(s) only. Bargaining unit employee because of action taken in processing grievances under the provisions of this Agreement.