Junie B is very upset when a boy in her class plans to invite everyone except her to his birthday party, but her grandfather helps her deal with the situation.
The day Mom comes to kindergarten, she is so excited that she forgets all her manners, but her understanding daughter guides her through the day showing her the proper way to behave.
Sam decides to send his toy monkey Timbo to kindergarten in his place, but after telling Timbo about his school friends and what his day is really like, he realizes he wants to go himself.
The author shares stories of things that took place in her kindergarten class to show parents, teachers, and students what is and what is not acceptable in kindergarten.