If you are intrigued by the impact of teaching children in Bhutan in English, and not in Dzongkha, you will find this essay in Kuensel about proposals to weight the system differently a must-read.
From the story:
“….what’s wrong in having English as the medium of English in Bhutan? I believe education has contributed significantly to Bhutan’s rapid development, in line with its philosophy of GNH. Being educated in English has enabled Bhutanese students to study in all parts of the world, earning degrees in many areas from accounting to medicine to engineering, and to return to Bhutan to apply their knowledge and skills.”