Ariz. Rev. Stat. § 15-765
D. A school district or county school superintendent may contract with, and make payments to, other public or private schools, institutions and agencies approved by the division of special education, within or without the school district or county, for the education of and provision of services to children with disabilities if section 15-766 and the conditions and standards prescribed by the division of special education have been met and if unable to provide satisfactory education and services through its own facilities and personnel in accordance with the rules prescribed by the state board of education as provided in section 15-213. No school district may contract or make payments under the authority of this section or section 15-764 or any other provisions of law for the residential or educational costs of placement of children with disabilities in an approved private special education school, institution or agency unless the children are evaluated and placed by a school district. The following special provisions apply in order to qualify for the group B ED-P weight:
G. If the individualized education program team determines that a residential special education placement is the least restrictive environment in which an appropriate educational program can be provided, the home school district shall submit the following documentation to the department of education:
L. All noneducational and nonmedical costs incurred by the placement of a child with a disability in a private or public school program and concurrent out-of-home care program shall be paid by the department of economic security for those children eligible to receive services through the division of developmental disabilities, by the department of child safety for the children for which it has legal responsibility and by the Arizona health care cost containment system for those children eligible to receive behavioral health or children's rehabilitation services through the Arizona health care cost containment system administration. This section does not prevent or limit the Arizona health care cost containment system, the department of child safety and the department of economic security from joint case management of any child who qualifies for services from two or more of these agencies or from sharing the noneducational costs of providing those services. The educational costs incurred by the placement of a child with a disability in an out-of-home care facility shall be paid as follows: