Except as otherwise provided in NRS 391.717:
is entitled to be a postprobationary employee in the ensuing year of employment.
the board of trustees of the school district shall, on or before May 1 or May 15, as applicable, offer the person a contract as a teacher for the ensuing school year. The person may accept the contract in writing on or before May 10 or May 25, as applicable. If the person fails to accept the contract as a teacher, the person shall be deemed to have rejected the offer of a contract as a teacher.
NRS 391.820