Okla. Admin. Code § 670:15-19-3
In addition to terms defined in 47 O.S. §1-101 et seq., the following words or terms, when used in this Subchapter, shall have the following meaning unless the context clearly indicates otherwise. Use of the singular term includes the plural and use of the plural term includes the singular.
"Department" means the Department of Public Safety.
"Division" means the Driver License Examining Division of Service Oklahoma.
"Parent" means the biological parent, adoptive parent, parent by marriage, or legal guardian (court appointed) of the student.
"Parent instructor" means a parent accepted by Service Oklahoma to teach a parent-taught driver education
course.
"Parent-taught driver education course" means a course of driver education instruction to be taught to a student by his or her parent, as prescribed by the provisions of 47 O.S. §6-105(A)(2)(b), which is certified by Service Oklahoma.
"Parent-taught driver education provider" means an individual, organization, company, or other entity who is approved and certified by Service Oklahoma to offer curriculum and material for parent-taught driver education courses.
"Student" means an individual who is at least fifteen (15) years of age.
"Vehicle" means the car, pickup, van, minivan, or sport utility vehicle used to conduct the behind-the-wheel portion of a parent-taught driver education course.
Okla. Admin. Code § 670:15-19-3