Spring has sprung in KINDergarten! Flowers grow just outside the classroom. The trees are budding, and even baby birds begin to chirp, but Mason isn't feeling very cheerful. Mason sees her friends getting better at everything, but she doesn't think she can do anything right. 
But Mason's favorite teacher Ms. Perry has an idea... a growth chart! It's not like other growth charts that measure how tall children grow, it's a place for students to put how they each want to change and grow over the next few months. Sure, some students want to get taller, but others have different goals. Reynaldo wants to learn the sound of every letter in the alphabet, Irene wants to learn how to ride a bike without training wheels, and Mason, well Mason wants to grow in every way!