I came from a formal training in photography for 3 years, and i would say that proper education is an important step stool to understanding all the technical and conceptual aspects of photography. In school , you'll get to touch almost all genre of photography. However, it is through another few years of practicing, reading, APPRECIATING that one starts to develop his style and strength in the area of his interest.
I don't think i have finish learning what i want to even though to this date, I have a full time relationship with photography for more than 6 years now. Technicality though crucial, has it's limitation to a certain point. What's photography beyond technicality? The next plateau-breaking point i guess is to start to identify what type of photography do you like and to pursue it.