For a contract between a teacher and a school district to be valid, it must have all of the following elements except ________.
◦ the contract terms are neither illegal nor against public policy
◦ the school board has made an offer and the employee has accepted the contract terms
◦ the school board establishes clearly its criteria of employment, emphasizing those elements different from state requirements
◦ the school board is not exceeding its authority and the teacher meets the criteria for employment