(b) Where a board of education, trustees of a common school district, or board of cooperative educational services votes to reject the recommendation of a superintendent of schools, district superintendent or district principal to grant tenure to any teacher, administrator and supervisor employed on probation, such vote shall be considered advisory and at least thirty days prior to the board meeting at which such recommendation is to be finally considered, the board shall notify said teacher, administrator and supervisor of its intention to deny tenure and the date of the board meeting at which it will take final action. Such teacher, administrator and supervisor may, not later than twenty-one days prior to such meeting, request in writing that he be furnished with a written statement giving the board's reasons for such intended action and within seven days thereafter such written statement should be furnished. Such teacher, administrator and supervisor may file a written response to such statement with the district clerk not later than seven days prior to the date of the board meeting.

(c) This section shall not be construed as modifying existing law with respect to the rights of probationary teachers or the powers and duties of boards of education, trustees of common school districts or boards of cooperative educational services, with respect to the discontinuance of services of teachers, administrators and supervisors or appointments on tenure of teachers, administrators and supervisors.