You are completely correct about the definition of Academy.
There are as many advantages to having a diffuse structure as there are disadvantages--especially from a defensive standpoint. Feint to one location, when the defenders get there, attack two others. Now the defenders are confused, distracted and required to split their forces, leaving the real target free to be hit. A diffuse academy structure makes it significantly easier to abduct individual students. After a few attacks like the one I described, when any, one part of the Academy gets attacked, they'd have to send defensive teams to every satellite, putting a severe drain on manpower. A centralized location means fewer opportunities to slip through the cracks.
And, as a global perspective, I'm sure that having Embassies all over the world would allow for plenty of "field trips" anywhere on the globe.
That seems a more likely scenario: One, central Academy, but students travel to the various Embassies as their classes require, to be trained, on-site, for specific cultural events.
There are as many advantages to having a diffuse structure as there are disadvantages--especially from a defensive standpoint. Feint to one location, when the defenders get there, attack two others. Now the defenders are confused, distracted and required to split their forces, leaving the real target free to be hit. A diffuse academy structure makes it significantly easier to abduct individual students. After a few attacks like the one I described, when any, one part of the Academy gets attacked, they'd have to send defensive teams to every satellite, putting a severe drain on manpower. A centralized location means fewer opportunities to slip through the cracks.
And, as a global perspective, I'm sure that having Embassies all over the world would allow for plenty of "field trips" anywhere on the globe.
That seems a more likely scenario: One, central Academy, but students travel to the various Embassies as their classes require, to be trained, on-site, for specific cultural events.