Well I think it's kinda true. Balance isn't really part of Ravenwood (or Dragonspyre Academy). It's more of it's own school. For instance, neither of the libraries in Krokotopia or Wizard City have the Balance banner. When you go into Ravenwood, right in front of Bartleby, on the ground has the symbol of each school... except Balance. Neither Ravenwood or Dragonspyre Academy have a Balance school. Balance seems to be more of on it's own school in Krokotopia, not part of any schools in the Spiral.
if i am right i think balance was thought of last or late and was just added in there real fast but is still best :D ps i am myth who just started balance and i know this all to well
Balance is kinda like foreign studies School you get a few classes on campus then you have to go abroad for the main course in teaching..... awesome when you think about it then the astral schools are like an independent study