| Admiralty Secondary School | Woodlands |
| Ahmad Ibrahim Secondary School | Yishun |
| Anderson Secondary School | Ang Mo Kio |
| Ang Mo Kio Secondary School | Ang Mo Kio |
| Anglican High School | Bedok |
| Anglo-Chinese School (Barker Road) | Novena |
| Anglo-Chinese School (Independent) (Secondary) | Queenstown |
| Assumption English School | Bukit Panjang |
| Assumption Pathway School | Bukit Panjang |
| Bartley Secondary School | Toa Payoh |
| Beatty Secondary School | Toa Payoh |
| Bedok Green Secondary School | Bedok |
| Bedok South Secondary School | Bedok |
| Bedok View Secondary School | Bedok |
| Bendemeer Secondary School | Kallang |
| Boon Lay Secondary School | Jurong West |
| Bowen Secondary School | Hougang |
| Broadrick Secondary School | Geylang |
| Bukit Batok Secondary School | Bukit Batok |
| Bukit Merah Secondary School | Bukit Merah |
| Bukit Panjang Govt. High School | Choa Chu Kang |
| Bukit View Secondary School | Bukit Batok |
| CHIJ Katong Convent | Marine Parade |
| CHIJ Secondary (Toa Payoh) | Toa Payoh |
| CHIJ St. Joseph's Convent | Seng Kang |
| CHIJ St. Nicholas Girls' School (Secondary) | Ang Mo Kio |
| CHIJ St. Theresa's Convent | Bukit Merah |
| Canberra Secondary School | Sembawang |
| Catholic High School (Secondary) | Bishan |
| Cedar Girls' Secondary School | Toa Payoh |
| Changkat Changi Secondary School | Tampines |
| Christ Church Secondary School | Woodlands |
| Chua Chu Kang Secondary School | Choa Chu Kang |
| Chung Cheng High School (Main) | Marine Parade |
| Chung Cheng High School (Yishun) | Yishun |
| Clementi Town Secondary School | Clementi |
| Commonwealth Secondary School | Jurong East |
| Compassvale Secondary School | Seng Kang |
| Crescent Girls' School | Bukit Merah |
| Crest Secondary School | Jurong East |
| Damai Secondary School | Bedok |
| Deyi Secondary School | Ang Mo Kio |
| Dunearn Secondary School | Bukit Batok |
| Dunman High School (Secondary) | Kallang |
| Dunman Secondary School | Tampines |
| East Spring Secondary School | Tampines |
| Edgefield Secondary School | Punggol |
| Evergreen Secondary School | Woodlands |
| Fairfield Methodist School (Secondary) | Queenstown |
| Fuchun Secondary School | Woodlands |
| Fuhua Secondary School | Jurong West |
| Gan Eng Seng School | Bukit Merah |
| Geylang Methodist School (Secondary) | Geylang |
| Greendale Secondary School | Punggol |
| Greenridge Secondary School | Bukit Panjang |
| Guangyang Secondary School | Bishan |
| Hai Sing Catholic School | Pasir Ris |
| Hillgrove Secondary School | Bukit Batok |
| Holy Innocents' High School | Hougang |
| Hougang Secondary School | Hougang |
| Hua Yi Secondary School | Jurong West |
| Hwa Chong Institution (Secondary) | Bukit Timah |
| Junyuan Secondary School | Tampines |
| Jurong Secondary School | Jurong West |
| Jurong West Secondary School | Jurong West |
| Jurongville Secondary School | Jurong East |
| Juying Secondary School | Jurong West |
| Kent Ridge Secondary School | Clementi |
| Kranji Secondary School | Choa Chu Kang |
| Kuo Chuan Presbyterian Secondary School | Bishan |
| Loyang View Secondary School | Pasir Ris |
| Manjusri Secondary School | Geylang |
| Maris Stella High School (Secondary) | Toa Payoh |
| Marsiling Secondary School | Woodlands |
| Mayflower Secondary School | Ang Mo Kio |
| Meridian Secondary School | Pasir Ris |
| Methodist Girls' School (Secondary) | Bukit Timah |
| Montfort Secondary School | Hougang |
| NUS High School of Mathematics and Science | Clementi |
| Nan Chiau High School | Seng Kang |
| Nan Hua High School | Clementi |
| Nanyang Girls' High School | Bukit Timah |
| National Junior College (Secondary) | Bukit Timah |
| Naval Base Secondary School | Yishun |
| New Town Secondary School | Queenstown |
| Ngee Ann Secondary School | Tampines |
| North Vista Secondary School | Seng Kang |
| Northbrooks Secondary School | Yishun |
| Northland Secondary School | Yishun |
| Northlight School | Kallang |
| Orchid Park Secondary School | Yishun |
| Outram Secondary School | Seng Kang |
| Pasir Ris Crest Secondary School | Pasir Ris |
| Pasir Ris Secondary School | Tampines |
| Paya Lebar Methodist Girls' School (Secondary) | Hougang |
| Pei Hwa Secondary School | Seng Kang |
| Peicai Secondary School | Serangoon |
| Peirce Secondary School | Bishan |
| Presbyterian High School | Ang Mo Kio |
| Punggol Secondary School | Punggol |
| Queenstown Secondary School | Queenstown |
| Queensway Secondary School | Queenstown |
| Raffles Girls' School (Secondary) | Toa Payoh |
| Raffles Institution (Secondary) | Bishan |
| Regent Secondary School | Choa Chu Kang |
| River Valley High School (Secondary) | Jurong West |
| Riverside Secondary School | Woodlands |
| School of Science and Technology, Singapore | Clementi |
| School of the Arts, Singapore | Central |
| Sembawang Secondary School | Sembawang |
| Seng Kang Secondary School | Seng Kang |
| Serangoon Garden Secondary School | Serangoon |
| Serangoon Secondary School | Hougang |
| Singapore Chinese Girls' School | Novena |
| Singapore Sports School | Woodlands |
| Spectra Secondary School | Woodlands |
| Springfield Secondary School | Tampines |
| St Andrew's School (Secondary) | Toa Payoh |
| St. Anthony's Canossian Secondary School | Bedok |
| St. Gabriel's Secondary School | Serangoon |
| St. Hilda's Secondary School | Tampines |
| St. Joseph's Institution (Secondary) | Novena |
| St. Margaret's School (Secondary) | Bukit Timah |
| St. Patrick's School | Bedok |
| Swiss Cottage Secondary School | Bukit Batok |
| Tampines Secondary School | Tampines |
| Tanjong Katong Girls' School | Marine Parade |
| Tanjong Katong Secondary School | Marine Parade |
| Temasek Junior College (Secondary) | Tampines |
| Temasek Secondary School | Bedok |
| Unity Secondary School | Choa Chu Kang |
| Victoria School | Bedok |
| West Spring Secondary School | Bukit Panjang |
| Westwood Secondary School | Jurong West |
| Whitley Secondary School | Bishan |
| Woodgrove Secondary School | Woodlands |
| Woodlands Ring Secondary School | Woodlands |
| Woodlands Secondary School | Woodlands |
| Xinmin Secondary School | Hougang |
| Yio Chu Kang Secondary School | Ang Mo Kio |
| Yishun Secondary School | Yishun |
| Yishun Town Secondary School | Yishun |
| Yuan Ching Secondary School | Jurong West |
| Yuhua Secondary School | Jurong West |
| Yusof Ishak Secondary School | Punggol |
| Yuying Secondary School | Hougang |
| Zhenghua Secondary School | Bukit Panjang |
| Zhonghua Secondary School | Serangoon |