Patrick Hely 
Por qué existen reglas en la escuela (Why Do We Have Rules in School?) [PDF ebook] 

Some children may wonder why there are so many rules they need to follow in school. This book explores how rules keep schools running smoothly and help students focus and learn. The text touches on important early elementary civics concepts from the C3 Framework for Social Studies. Full-color photographs help readers make connections with the text. After reading this book, students will understand that without rules, the common good of schools and classrooms would suffer.