The ep starts by showing how intelligent Charlene isn't in school, and how little she cares about it. But after our perception of her is formed, she becomes a great model for free thinking and integrity.
Cupernicus discovering fudge brownies was hilarious, and it was nice to have an episode where we can feel a great level of respect for Charlene; as usually it's Robbie who gets the roles of principles and integrity.
Charlene's resolve to believe and do what's right is very inspirational, as well as her clever idea for their punishment.
Sure, it may have been out of character, but it was such a wonderfully brilliant episode that we can gladly accept it.