Well I knew one teacher who claimed the classes varied according to the year of the Chinese calendar.
This could explain why:
Chinese children born in the year of the dragon are more successful by Isabella Steger
Quartz
August 30, 2017
No, children born in the year of the dragon are not born inherently superior.
Instead, the apparent success of these “dragon children” comes down to a lot of nurturing, according to two researchers at Louisiana State University (LSU) who studied the academic performance of people born in the year of the dragon in China. Due to the superstition that those born in that zodiac year will grow up to be more successful, places like China, Singapore, and Taiwan typically see a “baby boom” in those years. The last one fell in 2012.
In a working paper published this month by the US National Bureau of Economic Research, the researchers found that dragon children receive higher test scores in China’s national college examination and are more likely to go to university than people of a similar age born in other Chinese zodiac years. The researchers note that the findings come even as logically speaking, competition should be more intense for people born in the year of the dragon if there were more babies born in that year.
