| There are 36 classes with approximately 1,300 students. The class structure is as follows: |
| Secondary |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
| No. of classes |
6 |
6 |
6 |
6 |
6 |
3 |
3 |
|
| |
| While the medium of instruction in St. Mary's is English, students are trained to be bi-literate (Chinese and English) and tri-lingual (Cantonese, English and Putonghua). |
|