The Bone and Earth School is not a school like Contu's Academy, nor like the Schohanwicht, nor even like the Purple Academy of Thei. Rather, it is a movement of like-minded mages and their students who, living in a certain region, learn from and teach each other about Gates magic - and often claim to learn from entities beyond Cyve.
What makes the Bone and Earth School a school, rather than merely an assemblage of gates mages with varying skills, is its approach to dealing with the entities that its practitioners come across. Many gates mages outside the Bone and Earth School regard summoned and encountered creatures as tools and nothing more - or if they have encountered more noteworthy entities, they are regarded with fear and suspicion. Certainly, what gates mages do in other realms is kept very secret outside the Bone and Earth School.
But the Bone and Earth School publicly proclaims that its members have been in contact with other beings of great intelligence - some of whom are not hostile. This, however, is always accompanied by warnings that Gates magic is highly dangerous, and is best practised after studying with a qualified teacher. Even then, Gates Magic should be practised in remote areas with dead animals and bare earth - hence the Bone and Earth School's name.
Ideally, mages in this school are not allowed to practise Gates Magic until they have mastered three arts - negation magic, wrestling, and various forms of persuasive communication (debate, oratory, law, persuasion, etc.). Negation magic is used in order to minimize problems if one's Gate's magic go wrong, and wrestling is used when controlling summoned creatures, but the most commonly used skill of Bone and Earth School mages, aside from Gates Magic, is negotiating with summoned creatures. Bone and Earth School mages strive, as much as possible, to understand, befriend, and learn from beings whom they summon. They write down what they learn about and from these beings (including weaknesses) in cryptic books which they explain to selected students whom they deem wise enough. The students who have fully understood a text about a given creature are deemed worthy of summoning the creature. It is not known how many creatures have been written about in books, and to further confuse the matter, different lineages of teachers may have different names and traditions about different entities.
Bone and Earth School mages admit, if pressed, that they are secretive, but use this secretiveness in order to discourage unprepared gates mages from summoning dangerous creatures. They also spread stories, possibly true, about the terrible consequences of summoning creatures without being qualified gates mages. Some Bone and Earth School mages, who have attracted many followers, are alleged or allege themselves to be not fully human, but containing extra-cyvian ancestry. Bone and Earth School mages have a tense relationship with the central government, which respects but fears their powers and strange claims about their achievements
Any thoughts, @Legate of Mineta?