Maryland Code, Transportation § 16-816

(1)(i) Is an employee of the local school system or transportation company that operates the school vehicle;

(ii) Is otherwise authorized by the local school system to act as a school vehicle attendant for a child on the school vehicle; or

(iii) Is a nurse, an aide, or any other individual assigned or authorized to work with a student in accordance with the student's individualized education program, 504 Plan under the federal Rehabilitation Act of 1973, or other student-specific written plan; and

(2)(i) Is in possession of photo identification that identifies the local school system or transportation company that employs the individual as a school vehicle attendant; or

(ii) Is in possession of photo identification or another document issued by the local school system that authorizes the individual to act as a school vehicle attendant for a child on the school vehicle.