In a proceeding pursuant to CPLR article 78, inter alia, to compel the Board of Education of the Hempstead School District No. 1 to grant petitioner tenure, the appeal is from a judgment of the Supreme Court, Nassau County, dated September 10, 1979, which, inter alia, granted the petition and adjudged that petitioner had acquired tenure in his position. Judgment reversed, on the law, with $50 costs and disbursements, and proceeding dismissed on the merits. In July, 1975 petitioner was appointed to a probationary position as a librarian-media specialist by the appellant board, to be effective on September 1, 1975. In June, 1978 petitioner was notified by the appellant superintendent of schools that he intended to recommend to the board that petitioner be granted tenure. It then appears that one of the board members questioned the superintendent about his intention, in light of the fact that two of the petitioner’s supervisors had criticized his performance as being unsatisfactory. Thereafter petitioner requested a meeting with the members of the board. At this meeting petitioner asserted that the evaluations he received were flawed and biased. It is alleged that on August 16, 1978 petitioner was contacted by the assistant superintendent of schools and was informed that the board was willing to reconsider the matter and grant petitioner an additional year of probation, if the petitioner was willing to waive his tenure rights. Thereupon petitioner executed the following document:
"Board of Education
Hempstead School District * * *
"As you know, my probationary period as a teacher in the Hempstead School District will expire September 1, 1978. I have been advised that the Board of Education intends to deny tenure to me.
"In lieu of the Board taking such action, I agree that my probationary period shall be extended for a period of one year until September 1, 1979. I agree that I will not claim tenure by estoppel arising by virtue of my employment at Hempstead School District beyond September 1, 1978, and I agree that at the end of such additional one year period, the Board may either grant or refuse me tenure with the same consequences and exactly in the same manner as if such action took place now.
Thomas P. Juul_
THOMAS JUUL”.
In March, 1979 petitioner was notified in writing by the superintendent
