choice with something that is scalable across cultures.
IELTS is like a trusted and respected way of saying, Look, OK, I did shepherd geese for a part-time job, but I have also managed to become a near-native English speaker in between my traditional Ukrainian activities.
I knew it was very important to me to score high IELTS, but it took me a few years (and a lot of new acquaintances who were surprised by my exotic origin and wanted to know about my secret of passing up as a Brit), to figure out
how I did it.