Actually, this teaching method is gazillion years old. It was ridiculed by Chekhov and others back in the 19th century. The method was popular with the newly emerging middle classes whose members wanted to give their kids an imitation of aristocratic education. They couldn’t afford it, though, and had to settle for this method of teaching. The results were ridiculous.
The method was revived in the 1920s and the 1930s when developed countries tried to make secondary ed truly comprehensive and thought this was a good way to help the children of illiterate peasants and factory workers to catch up with middle-class peers. It failed just as badly as in the 19th century.
Today, wannabeism happens on the planetary scale, and this old teaching method is being disinterred yet again.
My experience with the Finnish students and colleagues, by the way, is that only the Japanese are more ignorant in terms of any but the most ultra-specialized, technical knowledge.