The roboteacher stood up. "And there's the closing bell. Do not hurry away, for you are to remain here tonight. There will be a school party, a sleep-together party. We will all sleep here in the school building."
"You mean we can't go home?"
The face of the littlest girl screwed up. "I want to go home."
"You may go home tomorrow. There will be a holiday tomorrow. A party tonight and a holiday tomorrow for every school on earth."
The tears were halted for a moment. The voice was querulous. "But I want to go home now."
Johnny Malone, the Mayor's son, put one hand on the littlest girl. "Don't cry, Mary. The robots don't care if you cry or not. You can't hurt them or cry them out of anything. We'll all go home in the morning."
The robots began to bring cots and to place them in the schoolroom, row on row. The children were led out into the play quadrangle to play. One of the robots taught them a new game, and after that took them to supper served in the school's cafeteria. No other robot was left in the building, but it did not matter, because the doors were locked so that the children could not go home.
The other robots had begun to walk out into the town, and as they walked the robots walked from other schools, in other towns. All over the country, all over the towns, the robots walked to tell the people that the children would not be home from school, and do what had to be done.
In the schools, the roboteachers told stories until the children fell asleep.