A new North-East Regional Institute of Education ( NE - RIE ) was set up at Shillong in December 1995 , to cater to the educational needs of the North-eastern States ( Assam , Arunachal Pradesh , Meghalaya , Mizoram , Manipur , Nagaland , Tripura and Sikkim ) . An enrichment course in psychology was organized for teacher educators teaching educational psychology in the District Institution of Education and Training ( DIET ) .53 844 .