Laboratory facilities should be designed with the most effective arrangement for maximum instructional efficiency and safety. Periodic evaluation and analysis should be used for improving instruction, abating safety hazards, and presenting an efficient learning environment. Attention should be focused on--(1) instructional program, (2) students, (3) teacher, (4) instructional material, (5) service facilities and lines, (6) supervisory potential, (7) expansion potential, and (8) traffic. Many factors can limit laboratory efficiency--(1) site, (2) material handling, (3) mechanical handling equipment, (4) illumination, (5) elevators, (6) service facilities, (7) storage facilities, (8) ventilation, (9) emergency, (10) exits and doors, (11) service access, (12) rest rooms, fountains, and eating facilities, (13) housekeeping, (14) project storage, and (15) parking and unloading areas. (RK)