Education
From AGEWiki
Rule Social Mode must be advanced.
Each region of the national territory of factions that are not tribal have an Education value (a single value, not one per social class). The higher the value, the better Social Mobility is, although Faction Attributes can greatly mitigate this parameter. An high Education value also speed up research, but also increase Militancy.
Education is mostly modified with the use of Historical Options, or over time, slowly, with some Faction Attributes.
Outside National Territory, there is no Education value.