Variables

1

2

3

4

5

6

7

8

9

10

11

12

1. Administrative supervision

-

2. Pedagogical supervision

−0.001

-

3. Career development supervision

−0.026**

−0.007

-

4. Students’ linguistic diversity

−0.112**

−0.007

0.068**

-

5. School’s location

−0.044**

0.119**

0.056**

0.101**

-

6. Public or private school

−0.085**

0.022*

0.087**

0.060**

0.145**

-

7. Principal’s gender

−0.092**

−0.088**

−0.015

0.018

0.029**

0.056**

-

8. Formal education/School administration or principal training programme or course

0.000

−0.021*

−0.054**

−0.013

−0.057**

0.045**

−0.009

-

9. Formal education/Teacher training/ education programme or course

0.023*

−0.055**

−0.058**

−0.061**

−0.040**

0.011

−0.018

0.407**

-

10. Formal education/Instructional leadership training or course

−0.002

−0.076**

−0.055**

−0.048**

−0.068**

−0.017

−0.025*

0.467**

0.501**

-

11. Experience/Number of year(s) as principal at this school

−0.017

−0.022*

0.014

0.035**

−0.002

0.006

0.009

−0.051**

−0.040**

−0.040**

-

12. Overall experience/Number of year(s) in the profession as principal

−0.015

−0.003

0.015

0.015

0.012

−0.011

0.008

−0.063**

−0.052**

−0.052**

0.637**

-