Royalty

What is royalty? After all, it's not a title given to kings, queens, etc.. As there are none in this world. Well, it's actually a title for the 5 most dominant families in the world. When in chapter 4, Joshua said that he's in one of the royal families, it actually just means that he's in one of the 5 most dominant families in his world, in which case it's the Lev family. Often royal children will actually be homeschooled by figures who possess higher magi than teachers, but in many cases the families want the children to have already experienced combat by the age where they are legally capable of fighting on their own, and one of the best schools for such experience is DIPS.