The New York times likes it, too.

MOM, IT’S MY FIRST DAY OF KINDERGARTEN! 
Written and illustrated by Hyewon Yum.
40 pp. Frances Foster Books/Farrar, Straus & Giroux. $16.99. (Picture book; ages 4 to 6)

In the enchanting world of Hyewon Yum (“There Are No Scary Wolves,” “The Twins’ Blanket”), parents are the frantic ones while children remain calm and confident. Mostly. Here, Mom worries that the school is big and that her 5-year-old could get lost. “Mom, it’s not that big,” he tells her. “I think it’s just right for a big boy like me.” But by the time they arrive at the classroom, his bright pink cheeks have faded to blue, and he has literally shrunk in size. Their roles flip back and forth until, at the end of the day, the boy assures his nervous mother that school is “awesome.” So is yet another book by Yum.