Sarah, Isabella, and Alice Are Substitutes

When Miss Addison is sick, Sarah fills in for her and Isabella and Alice are her assistants. What will Abby, Zack, and Addison think of this, and will they be rewarded in the end? Let's find out.
Note: The reason why Alice didn't talk about herself is because her story is currently unknown.
Inspired by the SML movie "Substitute Teacher!"
Cast:
Salli as Sarah and Alice
Allison as Isabella, Marie, and Miss Addison
Emma as Abby, Addison, and Young Sarah
Justin as Zack, Young Eliot, and Young Phineas
Ivy as Adalynn and Young Isabella
Kevin as Stuart