In 1964 the idea of reorganizing Tashi Namgyal Academy on public school lines as coeducational institution was implemented. It was decided to have in the beginning only seven classes starting from Kindergarten to VI as the highest class and then to go on adding one higher class every year till it reached class XI, the Final School Certificate Stage. This policy, it was hoped, would enable to build up an institution in which even through medium of instruction and the first language English it would remain Sikkimese in its tradition and culture.