| Instrument | Dimension | Stability coefficient |
| Use of ITT application |
| 0.85 |
| Obstacles against the use of ITT application | Obstacles related to teachers | 0.88 |
|
| Obstacles (technical and administrative) | 0.79 |
|
| Obstacles related to materials and equipment | 0.91 |
|
| Total | 0.87 |