
    In the Matter of the Board of Education of the Levittown Union Free School District, Appellant, v Levittown United Teachers, Respondent.
    Argued May 6, 1977;
    decided June 16, 1977
    
      William H. Englander and Robert E. Sapir for appellant.
    
      David N. Stein and James R. Sandner for respondent.
   Concur: Chief Judge Breitel and Judges Jasen, Gabrielli, Jones, Wachtler, Fuchsberg and Cooke.  