Why do Patrick and Omri get kicked out of the main hall in the story Indian in the Cupboard?
Patrick and Omri get kicked out of the main hall because Omri creates a disturbance. Patrick is actually not involved in the specific ruckus, but gets blamed anyway.
Omri had brought Little Bear to school, and had kept him in his hip pocket all morning. Right around third period, when the students were all in the main hall listening to the headmaster speak, the Indian decided he had had enough of being cooped up, and began stabbing Omri in the hip with his knife. To Omri, the knife's stab felt like "a sharp prick," very painful. He let out a yelp, and when Little Bear continued to stab him, Omri could not help but cry out and jump up in pain. The headmaster, seeing Omir dancing about and Patrick sitting near him, assumed that the two were messing around, and ordered them to leave the hall. Indignant about being blamed for something he did not do, Patrick walked out of the hall while Omri, still being stabbed, cavorted wildly and yelped repeatedly as he left. The headmaster was livid with rage, and the students broke out in hysterical laughter.
Once he and Patrick reached the end of the playground, Omri reached into his pocket to remove the troublesome little Indian. Omri was angry and let Little Bear know it, but Little Bear, on his part, was angry too at having been left so long, cooped up in Omri's dark pocket (Chapter 11).