<p><strong>Prepare for plenty of giggles as a kindergarten class arrives for their first day of school, but can''t find their teacher—only a delicious-looking sandwich and the words "Mr. S" scribbled on the chalkboard. Chaos ensues as the kids argue whether or not the sandwich must be their teacher. A comical, first day of school book of mayhem and chaos by Monica Arnaldo, perfect fans of <em>Miss Nelson Is Missing.</em></strong></p><p><strong>“This might be the funniest first-day-of-school book I’ve ever read." —Adam Rex, <em>New York Times</em> bestselling author of <em>School’s First Day of School</em></strong></p><p>It was the first day of school.</p><p>But even the kindergarteners of room 2B could tell something was seriously wrong . . . Where was the teacher? Who left this sandwich on the desk?</p><p>The only clue, written on the chalkboard, were three simple letters:</p><p><em>Mr. S</em></p>