Interior Stairways:
Code Reference (IRC R303.7):
"Interior stairways shall be provided with an artificial light source to illuminate the landings and treads Illumination Placement:
The light source must be located in the immediate vicinity of each landing and stairway.
Controls (e.g., switches) must be provided at each floor level (top and bottom) for stairs with six or more risers. This is a writing assignment for the ICC course.