Area 1

Area 2

Area 3

p-value

Effect size

PLCs components

Principal/ teacher mean

Principal/ teacher mean

Principal/ teacher mean

Area

Principal- teacher

Interaction

Prin./tea & Area 1, 2, 3

Shared Supportive leadership

1.788

1.831

1.778

0.795

0.002

0.810

A1 & 2.09

A1 & 3.02

A2 & 3.11

Collective creativity

1.886

1.872

1.777

0.426

0.043

0.141

A1 & 2.03

A1 & 3.24

A2 & 3.21

Shared values and vision

1.767

1.875

1.753

0.254

0.059

0.358

A1 & 2.23

A1 & 3.03

A2 & 3.26

Shared personal practice

1.805

1.905

1.713

0.090

0.125

0.194

A1 & 2.21

A1 & 3.19

A2 & 3.39

Supportive conditions - relationships

1.823

1.909

1.772

0.304

0.146

0.263

A1 & 2.17

A1 & 3.10

A2 & 3.27

Supportive conditions - structures

2.064

2.130

1.968

0.244

0.204

0.222

A1 & 2.13

A1 & 3.18

A2 & 3.31

Additional statements

1.810

1.973

1.797

0.091

0.182

0.623

A1 & 2.32

A1 & 3.02

A2 & 3.34