Several of my villagers always get caught between the hut above and to the left of the hospital and the sewing hut while exercizing. They always are carrying rocks with them, rushing back and forth until they are "rescued". Sometimes when the children gather in ranks near the science hut it will say something like "Attending Lessons", but rarely is there a teacher present. The teaching seems to take place while someone is wandering about the place, and no one seems to be listening. Must be frustrating...but that's usually the case...ask a teacher!