Here's what you might be thinking of:
* In-game levels: The Harry Potter LEGO games often have levels that correspond to classes at Hogwarts. For example, you might have a level for "Potions Class" or "Transfiguration Class".
* The Wizarding World: The games do portray the various social structures and hierarchies of the Wizarding World, but they don't explicitly focus on "class" in a way that we might understand it in the real world.
To summarize: The Harry Potter LEGO games focus on the magical world and its adventures. While they include aspects of the Hogwarts school and its classes, they don't delve into the concept of "class" as a social hierarchy in the same way that it might be explored in other works.