Bargaining Unit Defined and Exclusive Bargaining Rights Recognized. The Board of Directors of the Tumwater School District No. 33, hereafter referred to as 10 the District, recognizes the Tumwater Education Association, hereafter referred to as the 11 Association, as the exclusive bargaining representative for the following groups of 12 certificated employees; and agrees not to negotiate with or recognize on behalf of these 13 employees any employee organization other than the Tumwater Education Association 14 for the duration of this Agreement. 15