Teacher Informal Collaboration for Professional Improvement: Beliefs, Contexts, and Experience

Table 2

Beliefs about professional development (degree of importance: 1 = not important; 4 = very important.

	Component items	Factor loadings
Factor 1: lesson observation; Mean: 3.15; SD: 0.54; Cronbach Alpha: 0.7748	Look at videos of my lessons to improve my practice	0.684
	Visit another colleague’s lesson to learn from him/her	0.850
	Ask another colleague to observe my lesson to get his/her feedback	0.848
Factor 2: working with colleagues; Mean: 3.32; SD: 0.65; Cronbach Alpha: 0.8678	Prepare lessons with other colleagues	0.903
	Try out new ways of teaching with other colleagues	0.883
	Engage in team teaching with other colleagues	0.899
Factor 3: reflection based on case analysis and assessment results; Mean: 3.56; SD: 0.46; Cronbach Alpha: 0.6941	Analyse intensively a teaching problem before deciding on a solution	0.808
	Examine my students’ work to see if my teaching approach worked	0.726
	Use data from my students learning results to re-orient my teaching	0.733
Model fit statistics: RMSEA: 0,072; CFI: 0,987; WRMR: 1,061

on questionnaire in De Vries et al. [20].