When you start the game you can only play the Starter Exercises. You can choose between Pikachu, Froakie or Piplup. After beating one of them, you will be accepted at Pokemon Art Academy and you will begin the different courses.

Lesson	How to unlock
Apprentice Course	Beat Novice Test.
Bonus Lessons	Beat Graduate Test.
Graduate Course	Beat Apprentice Test.
Novice Course	Beat one of the Starter Exercises.