Here are lists of single-sex education (schools which only admit boys, or those which only admit boys at certain levels/years/grades), or those which follow the Diamond Schools model (separating students by gender at points), by country.
Australia
Tasmania
Australian Capital Territory
New South Wales
Queensland
Western Australia
Victoria
South Australia
Former boys' schools
The Armidale School , NSW (Now co-educational)
Macquarie Boys Technology High School
Maryborough Boys' High School, merged into Maryborough State High School
Newcastle Boys' High School , (now coeducational)
Southwood Boys' Grammar School , merged into Tintern Grammar
The School, Mount Victoria
New Town High School , Tasmania (to become co-educational)
Horton College Tasmania, closed in 1894
Guildford Grammar School .(Now coeducational)
St Patrick's College, Launceston , Tasmania (Now coeducational)
Launceston Grammar School , Tasmania (Now coeducational)
Scotch College, became Scotch Oakburn College (Tasmania)
Austria
Former
Azerbaijan
Former
Bangladesh
Chittagong Division
Brunei
Note: Hassanal Bolkiah Boys' Arabic Secondary School , despite its name, admits both male and female students.
Canada
British Columbia
Vancouver
Ontario
Toronto
Former:
Quebec
Former
Cyprus
Former
Ethiopia
Fiji
France
Gibraltar
Greece
Fifth Boys Gymnasium of Thessaloniki (closed)
A non-profit public secondary school in the city of Thessaloniki's Analipsi neighborhood, comprised 3-year junior high school and 3-year high school (six-grade), and also Higher Education entrance education. Previous was the Villa Mehmet Kapandji, today is The Cultural Centre of Education Foundation of National Bank of Greece.
Guam
Guernsey
Hong Kong
Hungary
India
Please see, Category:Boys' schools in India .
Iran
Since the Iranian Revolution government schools have been divided by gender
Iraq
Baghdad
Al Mutamayizeen Secondary has boys' schools.
Jamaica
Japan
Jersey
Kenya
South Korea
Lebanon
Became coeducational
Luxembourg
Now coeducational
Malaysia
Malta
Mauritius
Mexico
Irish Institute in the State of Mexico has a separate campus for boys.
Universidad Panamericana Preparatoria in Mexico City has a separate campus for boys.
Namibia
Former boys schools
Nepal
Former boys schools
New Zealand
Auckland Region
Bay of Plenty Region
Canterbury region
Gisborne Region
Hawke's Bay Region
Manawatū-Whanganui
Marlborough Region
Northland Region
Otago region
Southland region
Taranaki Region
Tasman District
Waikato region
Wellington Region
Former boys' schools
Nigeria
Abia State
Akwa Ibom State
Anambra State
Benue State
Delta State
Ebonyi State
Imo State
Lagos State
Ogun State
Oyo State
Plateau State
Pakistan
Government schools in this country are divided by gender
Philippines
Saudi Arabia
Government schools in this country are divided by gender
Singapore
All-boys secondary schools:
South Africa
Eastern Cape
Free State
Gauteng
KwaZulu-Natal
Northern Cape
North West
Western Cape
Taiwan (Republic of China)
Tanzania
Turkey
Now coeducational
Moved
Uganda
United Kingdom
United States
Zambia
Former boys' schools
Zimbabwe
Ottoman Empire
Adrianople Vilayet
Aydin Vilayet
Constantinople Vilayet
Salonika Vilayet
See also
References