Appeal from an order of the Supreme Court, Ulster County, which granted petitioners’ motion to stay arbitration. On September 1, 1969 Mrs. Lynne Friedman was appointed to a three-year probationary period as a teacher in the Livingston Manor School District. On April 9, 1971 the New York State Legislature passed an amendment to the Education Law to become effective on May 9, 1971, which substituted a five-year probationary period for the previously applicable period of not less than one year nor more than three years (L. 1971, eh. 116). The Legislature did not make any specific provision for persons who were then serving in three-year probationary status and this amendment was generally assumed to have extended all existing periods of probation to five years (see Matter of Central School Dist. No. 1 of Towns of Carmel and Putnam Valley [Mahopac Teachers Assn.],
