Literature
Scrolls are similar to literature in real life, and, to return to the world of fantasy of Wings of Fire, most dragon tribes read scrolls.

Tribes
MudWings - Sora said in The Dark Secret that she was reading about the prophecy. It has been about twenty years since the death of Queen Oasis.
SandWings - It is unknown if SandWings read scrolls.
SkyWings - SkyWings use scrolls to send messages, and Peril lied and said that she read about the Champion's Shield when Scarlet asked her how she knew about it, so it is presumed that SkyWings read them as well.
SeaWings - The SeaWings read scrolls, most of them written by Queen Coral. Some of her work includes The Missing Princess, The Tragedy of Orca, A Claw of Murder, A Tail of Blood, and many other stories, all of which are taught in SeaWing schools. The scrolls are made with a mixture of whale blood and squid ink to make them waterproof.
RainWings - RainWings didn't read scrolls, and never had any contact with the rest of Pyrrhia, until Glory claimed the throne.
IceWings - It is unknown if IceWings read scrolls.
NightWings - The NightWings read scrolls, Starflight and Mastermind have always been fascinated by them. There used to be a large library at the Night Kingdom.
List of Known Scrolls
The Claw of Murder
A Tail of Blood
Tales of the NightWings
A NightWing Guide to the Dragons of Pyrrhia
A Longitudinal Study of Peculiar Scavenger Behavior
The Sluglike Qualities of MudWings
Dangers of the Rainforest
A Natural History of Unnatural Dragon Abilities