County boards of education may at their discretion provide for the transportation of employees of such boards of education to and from schools along with pupils on established pupil transportation route schedules where such transportation can be provided without extra mileage or the overcrowding of school buses; provided, that the county board of education shall not be liable for any damage which may occur to such employee of the school board so transported.
Ala. Code § 16-8-27 (1975)