The enactment of this chapter shall not be construed as making the provisions of Section 923 of the Labor Code applicable to public school employees and shall not be construed as prohibiting a public school employer from making the final decision with regard to all matters specified in Section 3543.2.
Nothing in this section shall cause any court or the board to hold invalid any negotiated agreement between public school employers and the exclusive representative entered into in accordance with the provisions of this chapter.