[They] came to another school, where a tired-looking girl was teaching arithmetic to a number of boys who looked very much like pigs. She looked out of the window and saw the divine revelers singing up the street and a stab of joy went through her heart. Aslan stopped right under her window and looked up at her.
“Oh, don’t, don’t” she said. “I’d love to. But I mustn’t. I must stick to my work. And the children would be frightened if they saw you.”
“Frightened?” said the most pig-like of the boys […] and they all came crowding to the window. But as soon as their mean little faces looked out, […they] began howling with fright and trampling one another down to get out of the door and jumping out of the windows. […]
“Now, Dear Heart,” said Aslan to the Mistress: and she jumped down and joined them.