Pokémon the Series: Sun & Moon Episode 30: The Ol` Raise and Switch!
Episode 30 of 146 of Pokémon the Series: Sun & Moon, aired June 15, 2017, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Professor Kukui has given the class an intriguing assignment: everyone switches Pokémon partners for the weekend! Each new pairing has a few bumps in the road at first—Snowy refuses to eat under Ash’s care, and Kiawe just doesn’t know how to handle a Water type like Popplio.