Pokedex diplomas
Complete the indicated task then enter the hotel in Coumarine City. Talk to the "Game Director" to receive the corresponding diploma, which can be seen inside your house in Vaniville. Note: Catching Mew, Jirachi, Deoxys, Shaymin, Darkrai, Arceus, Keldeo, Meloetta, Genesect, Diancie, Hoopa, or Volcanion are not required for any of the diplmomas.
Central Kalos Pokedex Diploma: Catch all Pokemon in the Central Kalos Pokedex
Coastal Kalos Pokedex Diploma: Catch all Pokemon in the Coastal Kalos Pokedex.
Kalos Pokedex Diploma: Catch all Pokemon in the Kalos Pokedex.
Mountain Kalos Pokedex Diploma: Catch all Pokemon in the Mountain Kalos Pokedex
National Pokedex Diploma: Catch all Pokemon in the National Pokedex.