St. John's Diocesan Girls' Higher Secondary School

22°32′15.00″N 88°21′15.23″E / 22.5375000°N 88.3542306°E / 22.5375000; 88.3542306

St. John's Diocesan Girls' Higher Secondary School
Location
17, Sarat Bose Road, Kolkata, West Bengal, India
Information
MottoThe Good Retain, The Better Follow
Religious affiliation(s)Church of North India
Founded1876 (1876)
FounderAngelina Margaret Hoare
PrincipalSnigdha Gain
GradesNursery I, Nursery II
Kindergarten or Transition School
I to IV (Junior School)
V to VII Middle school
VIII to X High School
XI to XII (Higher Secondary School)
GenderGirls only
Average class size60 students in each of 4 sections of a class.
LanguageEnglish, Bengali, Hindi
Houses4
Colour(s)  Green   pink
  blue   yellow
SportsAthletics and basketball
NicknameDiocenas
PublicationPapyrus
AffiliationsWBBSE and WBCHSE
Websitewww.stjohndiocesan.in

St. John's Diocesan Girls' H.S. School (informally known as Diocesan or Dio) is a girls-only day school located in Kolkata (Calcutta), West Bengal, India. It was established in 1876 by British missionary Angelina Margaret Hoare from Kent, England who devoted her life to the advancement of women's education in British India. It is a Christian school run by the Protestant Church of North India and its primary language of instruction is English. The school's patron saint is Saint John the Baptist. Although previously a college, the school was stripped of its college status by the British Government when freedom-fighter Bina Das, a student of the school, attempted to assassinate the Governor of Bengal, Stanley Jackson, in the Convocation Hall of the University of Calcutta on 6 February 1932.

Today, the school is often considered to be one of the most prestigious girls' schools in Bengal, and has a rich history of distinguished alumnae such as Lady Abala Bose, Gayatri Chakravorty Spivak, and Maitreyi Devi. It is situated in the iconic Landsdowne Road (officially Sarat Bose Road) in South Kolkata and also runs a school for underprivileged children in Ripon Street.