The Human Resource Development Department (HRDD), Government of Sikkim in order to strengthen the teacher education in the State upgraded the then TTI to District Institute of Education and Training (DIET), Gangtok in 2003. This was later followed by establishment of District Resource Centers (DRCs) in Namchi and Geyzing during 2010. These two DRCs have now been upgraded as DIET from 2015.

The State Institute of Education (SIE) established in the year 1978 was upgraded to the State Council of Educational Research and Training (SCERT).

1. Teacher’s Training

The State has seven institutes which conducts courses to prepare school teachers of both primary and secondary levels. They are:
 

Sl.no.	Name of Institute
1.	District Institute of Education and Training – East District
2.	District Institute of Education and Training – South District, Namchi
3.	District Institute of Education and Training – West District, Geyzing
4.	Carmel Teacher Training, Institute – East District, Pakyong
5.	Loyola College of Education – East District, Pakyong
6.	Harka Maya College of Education
7.	Sikkim Government B.Ed. College, Soreng, West District