or do they only get the choice to switch their class from dragonadventurer to 1 other school form 10 possible ones?
quote
In addition, we are now developing new quest-based schools for Ancient Dragons. This will allow players to make choices about how they wish to specialize their Ancient Dragons in a similar way to how the other 10 races currently multi-school. Our goal is not to make the Dragons the same as the other races, but to provide an interesting way to further progress this uniquely Horizons player experience.