No day program in part or in full for the care, training, or treatment of a person with mental retardation, a related disability, head injury, or spinal cord injury may deliver services unless a license first is obtained from the department. For the purpose of this article 'in part' means a program operating for ten hours a week or more. Educational and training services offered under the sponsorship and direction of school districts and other state agencies are not required to be licensed under this article.