Which episode does Ashley appear at will and carlton's school in The Fresh Prince of Bel-Air?

Ashley appears at Will and Carlton's school in the episode titled "The Young and the Restless," which is the 18th episode of Season 1 of The Fresh Prince of Bel-Air. In this episode, Ashley transfers to their school and faces challenges fitting in. Will and Carlton try to support her, leading to humorous and heartwarming moments.