[another_story]

I can speak as someone who has taught CS in high school in a few different East Asian countries, including Taiwan. The bias exists, but is less pronounced than it was 10 or 15 years ago. Boys will make remarks, but if you nip it quickly at the start then it's generally ok.

I teach all four years in high school and each year I get more females rolling up. My recent graduating classes have had more females, but still only 20% or so, but my entry level classes now are 50/50.

Oddly, every female I've had who takes the higher level CS classes has graduated with the highest mark you can get on the exit exams. They routinely destroy the boys on any test and with regard to programming skills. Sadly, some of those who take it at the lower level are pushed by their parents to take other classes at higher levels in preparation for university admission. Parents sometimes carry that bias that females should not be engineers.