Upon entering, Trainers meet with the headmasters of houses 1-4, who will explain what they need to do.

The test: You’ve already chosen two of the first four houses to join. Of course, you will only get into one of them, which the test will decide. Out of the starters from the Houses, you will get a roster of six pokemon. Then you will be sent of to an island for 24 hours, where you will have to use each pokemon at least once in battle. Whichever pokemon seems best suited for you is the starter you will keep, and you will be placed in that House.

Starter determined by knowledge of the pokemon, skills in battle, and friendship with the pokemon.

But, that’s only where you start. You can go through the types and Houses, but only after you’ve mastered one type can you move to the next, and only after you’ve mastered all of one Houses types can you go to another.