Table 1 Sampling of schools by study area, medium of instruction, types of school and tuition fees [35]
Characteristics | High-tuition schools | Medium-tuition schools | Low-tuition schools |
|---|---|---|---|
Area | |||
 Dhaka North | 2 | 2 | 3 |
 Dhaka South | 2 | 2 | 3 |
Medium of instruction | Â | Â | Â |
 English only | 3 | 0 | 0 |
 Bengali/English | 1 | 0 | 0 |
 Bengali only | 0 | 4 | 6 |
Types of school | Â | Â | Â |
 Co-education | 4 | 4 | 4 |
 Single sex | 0 | 0 | 2 |