A survey of over 450 government schools across nine states has shown that on an average, one toilet is used by 76 boys while 66 girls make do with one washroom.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/1-toilet-each-76-boys-66-girls-govt-schools-survey
[2] http://admin.indiaenvironmentportal.org.in/category/author/dipak-dash
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/total-sanitation-campaign
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation