Md. Code, Transportation § 16-816

(a) An individual may not drive a school vehicle on any highway in this State unless the individual:

(1) Passes an appropriate medical examination; and

(2) For driving a school bus, has been issued a commercial driver’s license endorsed school bus.

(b) Except as provided in subsections (c) and (d) of this section, a driver of a school vehicle may not allow an individual who is not a student or school employee to board or ride on the school vehicle.

(c) An individual may board and ride on a school vehicle as a school vehicle attendant if the individual:

(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.

(d) An individual may board and ride on a school vehicle with the written permission of the local school system.

(e) With the advice of the State Department of Education, the Administration may adopt regulations concerning the qualifications of school vehicle drivers.