Time Out is the nineteenth chapter of Wayside School Gets a Little Stranger.
In every Wayside book, the 19th chapter is always portrayed as the 19th floor. In this installment, Miss Zarves has a cow in her class, presumably left over from the events in the previous book (It is mentioned in the first chapter that Louis had cleared the school of cows, but kept hearing an untraceable "moo.") The cow continually distracts Miss Zarves to the point where she can no longer teach. She goes to Principal Kidswatter to complain, but he doesn't see or hear her. She finally storms out of the school, intending to quit, but the three men with the attaché cases stop her and tell her she is a good teacher and that the school needs her. Miss Zarves returns to the school feeling validated.