The vast majority of people--not just peasants,
people--do not have levels and cannot be measured in this way.
To put this in more concrete terms, though I'm pulling these numbers out of thin air:
50% of trained Waziri mages are
at most level 1 and will never be any higher level. (Most of them aren't even level 1.*)
30% can hit level 2-3, but will never progress any further
15% can reach the lofty heights of 5th level, but will never progress any further
5% can maybe grow further, but rarely (if ever) get beyond 7th level
Of course, I play Dungeon World, so being 7th level is about 2/3 of the effective maximum in our game.** Similar patterns apply to everything else. Temple knights (Paladins), Safiqi priests (Clerics), Raven-Shadow assassins, Silver Thread pickpockets, Al-Rakkan soldiers, etc., etc. Anyone who just does ordinary manual labor
certainly doesn't qualify for class levels and other such things. They might have skills or abilities related to their work, but that would never be represented in any way even remotely comparable to a PC's class levels.
*The primary uses of magic in the setting my group has developed are ritual in nature, rather than spellcasting. A "zeroth-level" spellcaster can manage rote spells and perhaps one or two "proper" spells in a day, but can do ritual after ritual as long as they have the right power source(s) and training. Hence, most Waziri mages do contract work, teaching, research, or some combination of the three.
**I have created "11th level" rules. When you reach level 11, you become Legendary, which gives you the Legendary move. You no longer spend XP to level up, and can instead spend it on other bonuses instead. Legendary characters are
significantly more powerful in terms of what they can achieve, though they continue to be fragile in a variety of ways. My players care about the setting and NPCs though, so I can still threaten them via their
allies and their
status in the world.
