Variable

% Responses

Mean

Standard deviation

Evaluation index

Negative

Neutral

Positive

All companies should implement sustainable development practices (SUST_1).

15.1%

38.8%

43.1%

4.55

0.83

1.51

All companies should train their staff with sustainable development practices (SUST_2).

8.8%

38.5%

50.9%

3.61

0.93

1.89

Sustainable development courses should be taught in secondary education so that students receive the knowledge that will make them aware (SUST_3).

5.8%

26.4%

67%

3.42

1.02

2.91

Sustainable development courses should be taught in higher education so that students receive the knowledge that will make them aware (SUST_4).

6.9%

26.1%

65.6%

3.94

0.95

2.78

Professors should integrate into their modules sections that refer to sustainable development (SUST_5).

20.7%

31.5%

47.8%

3.93

0.97

1.51