Ep 17. Meek For A Week/Arthur, World's Greatest Gleeper

In Meek For A Week, Arthur is assigned by his teacher to be "Meek for a Week" and not cause any trouble or be loud for the duration of the week. At first, Arthur finds it difficult to contain himself, especially when his sister DW starts to annoy him. He resists the temptation to retaliate and instead tries to find ways to be helpful, such as picking up trash in the park and helping his friends with their homework. However, when a new kid named Vic arrives and starts bullying him, Arthur begins to feel the urge to stand up for himself. With the help of his friends, Arthur finds a way to show Vic that being tough isn't the only way to be cool.

In Arthur, World's Greatest Gleeper, Arthur and his friends are excited to participate in the school's Glee Club, but when Arthur's voice starts to crack during practice, he becomes self-conscious and worries he won't be able to hit the high notes. Meanwhile, Francine is convinced she has the best voice in the Glee Club and can't wait to show off her skills. When the school's gym teacher fills in as the Glee Club's conductor and allows them to sing a different genre of music, the kids struggle to adapt. With a little practice and some encouragement from their friends, the Glee Club manages to pull it together for an amazing performance.