“El respeto nos ayuda a vivir en armonía” (Respect helps us live in harmony) is a first-grade lesson of the Ministry of Public Education. It teaches children “frases de cortesía para saludar y despedirse” (courtesy phrases for greeting and saying goodbye). It also explains that “en español, los niños generalmente hablan a las personas mayores de ‘usted'” (in Spanish, children generally address older people as usted).