1968 - 1969
N.S.N. Children’s School was started as a humble beginning at Chromepet.
1980 - 1981
Upgraded as N.S.N Matriculation School at Chromepet.
1985 - 1986
Upgraded as N.S.N Matriculation Higher Secondary School.
1993 - 1994
N.S.N School Celebrated its Silver Jubilee.
2010 - 2011
N.S.N. Scouts & Guides Movement celebrated its Silver Jubilee.
2018 – 2019
N.S.N. School celebrated its Golden Jubilee, marking 50 years of academic excellence at Chromepet.