Mississippi Code Title 45. Public Safety and Good Order § 45-11-41

In the construction of school buildings all outside doors shall be made to open outwardly. All buildings of two (2) or more stories in height shall be constructed so as to give easy escape in case of fire, by providing modern fire escapes, or by providing iron ladders, slides or stairways on the outside of such buildings. In case of ladders, slides or stairways on the outside, sufficient platform room at the top of such ladder, slide or stairway and sufficient banisters or railings shall be provided to guarantee the safety of the children in getting out of the building. Provided, however, that in any fireproof school buildings with each floor on the ground level and constructed for more than ten (10) years, the board of trustees of the school or attendance center, in their discretion, may not be required to add fire escapes provided within sixty (60) days immediately following the passage of this section they spread upon their minutes a resolution to that effect.