MURNI Handayani stood in front of the class at Public Senior High School (SMAN) 2 in Semarang. The lady teacher was immersed in explaining some study material. The blackboard featured a circle, a formula, and a scribbled sentence in the English language. It was also in English that she taught. Her 24 students listened seriously to her.

Once in a while, a couple of students asked questions, speaking in broken English. When she realized t