Optimized scheduling is advantageous only as long as the participants keep to the schedule by attending the meetings and starting and finishing on time. The latter can be achieved by a school bell or electronic voice-over message played over the school PA system, at each change of interview time (E.g. "Please move to your next interview"), avoiding to schedule very short interview times that are harder to keep running on time, scheduling empty slots at intervals to assist in bringing events back onto time if they are running over.