In Larry Niven’s Ringworld series, you learn that the 200 year old Louis Wu is illiterate. Why learn to read in a society where you talk to computers and they tell you an answer?
In Neal Stephenson’s novel “Anathem” there are “cloisters” scattered around the world which eschew all technology. They have books and they learn real skills. The world goes though Dark Ages every thousand years or so and most of the planet is alternately “advanced” or “barbaric” — but the cloisters are a constant and periodically help the world move out of barbarism a little faster than it would otherwise.