Hunters
Author: Professor Ozpin, Headmaster of Beacon Academy.
In the simplest of terms, Huntsmen and Huntresses are warriors who are specifically trained to fight Grimm. However, their role in the society at large is much more profound by far.
They are the backbone of civilization, responsible for keeping the Grimm at bay. While also performing various odd jobs in cities and villages, they aren't tethered to the kingdoms, though most do often align themselves with a kingdom.
In order to train these would-be warriors, the academies were formed. Beacon in Vale, Haven in Mistral, Shade in Vacuo, and Atlas in the now defunct kingdom of Mantle. Setting their students up in teams to help foster growth and good relationships.
These schools teach many things, but a core set of classes do stand out to show their importance to a career. That being: Huntsman regulation and law, sparring and team building, Grimm studies, world history, survival, advanced weapon building, mercenary economics, weight lifting and basic fitness, psychology, sociology and finally infrastructure repair and construction.
These classes are critical to building up the core tenets of the Hunters. They are the ones who go out to protect lives and rebuild in the face of the Grimm threat.