According to Arizona Revised Statutes (ARS) 15-802:
"Section C. An affidavit of intent shall be filed within thirty days from the time the child begins to attend a private school or home school and is not required thereafter unless the private school or the home school instruction is terminated and then resumed. The person who has custody of the child shall notify the county school superintendent within thirty days of the termination that the child is no longer being instructed at a private school or a home school. If the private school or home school instruction is resumed, the person who has custody of the child shall file another affidavit of intent with the county school superintendent within thirty days."