Kate Elliott’s 2022 Servant Mage is a standalone (thus far) secondary universe fantasy novella.
Having led the Liberationists to victory over the corrupt monarchy, the August Protector then centralized government on herself, the better to provide society with the moral guidance it so desperately needed. Subjects found themselves firmly guided towards roles that best suited their strengths and guided away from distractions (like literacy) that could only confuse them. In the eyes of the Protector, utopia has been achieved. For some inexplicable reason, a handful of malcontents persist in resisting the correct social order.
Fellian, for example, is not merely unhappy that her magic was used to justify making her an involuntarily indentured servant AKA a slave. She secretly teaches people to read, something that could get her hanged if she were ever caught. Events will transpire such that illegal literacy will be the least of her crimes.