Delivery of a teacher's written request for a hearing must be established by:
- certified mail with return receipt signed by the superintendent, chief executive officer, or board member, or a person authorized to accept certified mail for the school district; or
- personal delivery evidenced by a receipt signed by the superintendent, chief executive officer, or board member; or
- an affidavit of personal service upon the school district made by a person authorized to effect personal service no later than fifteen days after receipt of the notice by the teacher.