National Preschooler's Day is observed on the second Friday in March, celebrating preschool-attending children in the United States. This day acknowledges the importance of preschool as the first stage of education for children aged three to five, highlighting various approaches to teaching during these formative years. Activities may include appreciation for preschool teachers, who play a crucial role in children's cognitive development and understanding of the world. The day emphasizes the significance of play and discovery in preschool settings, contrasting with more formal educational methods. National Preschooler's Day aims to honor young children and the educators who support their growth and learning.