| Institute (IES) | Year | N˚ of students | Year | N˚ of students | Year | N˚ of students | Total |
| LA RIBERA | 3˚ | 42 | 4˚ | 36 | 5˚ | 00 | 78 |
| DOÑANA | 3˚ | 13 | 4˚ | 38 | 5˚ | 20 | 71 |
| Questionnaires | 149 | ||||||