Arthur's First Day

"Arthur's First Day" is a one-hour TV special.

Summary
"It's finally the first day of fourth grade and Arthur couldn't be more excited - until he learns Buster is in another class! Meanwhile, D.W. is nervous for her first day of kindergarten. Will Arthur and D.W. be able to make new friends?"

Characters

 * Nigel Ratburn
 * Sue Ellen Armstrong
 * Fern Walters (cameo)
 * Binky Barnes
 * Jenna Morgan (cameo)
 * Edwin (cameo) (now known as Ben)
 * Sarah (cameo) (now known as Dolly)
 * Alex
 * Samir
 * Nadine Flumberghast (mentioned)
 * Emily
 * Alan Powers (cameo)
 * Tommy and Timmy Tibble
 * Muffy Crosswire
 * Mrs. Grimslid
 * Arthur Read
 * Francine Frensky
 * D.W. Read
 * Jane Read
 * David Read
 * James MacDonald
 * Molly MacDonald
 * Rattles
 * Buster Baxter
 * Fletcher
 * Slink
 * Lucy (cameo)
 * Lisa (cameo)
 * D.W.s New Teacher (debut)
 * Oliver Frensky (cameo)
 * Laverne Frensky (cameo)

Trivia

 * First special to premiere on Labor day.
 * The special has Everyone aging up a year a major change to the series.
 * The Loud House also aged up their characters in Season 5
 * The class list refers to Binky Barnes by his nickname. In "What's in a Name?" Mr. Ratburn's third grade class list referred to him by his legal name, Shelley Barnes.
 * Many of the background students' names on the class lists are names of credited production crew members.
 * For the new school year, several teachers at Lakewood Elementary have started teaching a different grade level. Mrs. Sweetwater now teaches second grade, Mr. Ratburn and Mrs. Grimslid now teach fourth grade, and Mr. Marco now teaches fifth grade.
 * Molly's eyes are revealed in this special.
 * First appearance of D.W.s New Teacher.
 * However Kindergarden Helpers was realised before this special so that is D.W.s New Teachers first appearance.
 * This is the last special of the series.
 * Arthur and his friends will change clothes in this season:
 * D.W. has blue clothes.
 * Alan has red clothes.
 * Mr. Ratburn has black clothes.
 * Jenna has purple clothes.
 * Fern has blue clothes.
 * Arthur has green yellow and blue clothes.
 * Francine has long sleeves instead of short sleeves.
 * Buster has blue clothes.
 * Binky has white and blue clothes.
 * Emily has orange clothes.
 * The tibbles has green clothes.
 * Moral: Just because someone isn't doing something well doesn't mean you have to discourage them for your own benefits.
 * Ladonna isn't in this special.
 * However its possible this special takes place after When Duty Calls.
 * Originally, This special would be realised as part of Season 25, however Season 25 was delayed to winter 2022 so this won't release as part of said season.

Errors

 * Alex has a 3rd grade uniform instead of his 4th grade uniform.