NATIONAL BESTSELLER - Award-winning author Jessica Young and New York Times bestselling illustrator Renee Kurilla crafted a heartwarming story about the first day of school, told from the perspective of three timely characters: Yesterday, Today, and Tomorrow. Yesterday and Tomorrow do everything together. Now that the first day of school is here, Yesterday and Tomorrow are unsure about what the day will bring! Until sure enough they discover the power of living in the present with the help of their new friend, Today. From the New York Times bestselling illustrator of Just Because, here is a gentle and uplifting picture book for anyone facing a new experience.