| S/N | Names of Schools in Delta North Senatorial District | Students | Sample (10%) |
| 1 | Olona Mixed Secondary School, Onicha, Olona, Aniocha North | 430 | 43 |
| 2 | Ubulu-Uno Mixed Secondary School, Ubulu-uno, Aniocha South | 610 | 61 |
| 3 | Owanta Secondary School, Owanta, Ika North-East | 537 | 54 |
| 4 | Ogbemudei Secondary School, Ika South-east | 438 | 44 |
| 5 | Ashaka Mixed Secondary School, Ashaka, Ndokwa East | 418 | 40 |
| 6 | Ugiliami Mixed Secondary School, Ndokwa West | 502 | 50 |
| 7 | Ibusa Mixed Secondary School, Ibusa, Oshimili North | 481 | 48 |
| 8 | Osadenis Mixed Secondary School, Asaba, Oshimili South | 651 | 65 |
| 9 | Umutu Mixed Secondary School, Ukwuani | 433 | 43 |
|
| Total | 4500 | 448 |