The Question and Answer section for Wonder is a great resource to ask questions, find answers, and discuss the novel.
What chapter are you referring to?
From the text:
"Like a lamb to the slaughter": Something that you say about someone who goes somewhere calmly, not knowing that something unpleasant is going to happen to them.
I Googled it last night.
I'm sorry, did you have a question about the novel, Wonder?