In Pokémon the Series: Sun & Moon, which island is home to the Pokémon School?

In Pokémon the Series: Sun & Moon, the Pokémon School is on Melemele Island.

Ash attends the school in Hau’oli City after moving to the Alola region with his mother. Professor Kukui teaches there, and the school becomes the main meeting place for Ash’s classmates, including Lana, Mallow, Kiawe, Sophocles, and Lillie.

Melemele is the first island Ash explores in Alola and is also the domain of guardian deity Tapu Koko. The other major islands are Akala, Ula’ula, and Poni. The school setting distinguishes Sun & Moon from earlier seasons, which generally followed Ash through a traveling group rather than classroom life.