Angela de Jong

76 4.3.2. Participants Fourteen school teams that started working with the program in September 2018 participated in the current study (three school teams were part of one large vocational education institution). The participating schools cover an age range of children from 4 to 16 years and older. The schools were well-spread across the Netherlands, were in rural as well as urban areas, and were all in the first year (the implementation phase). In total, the teams included 148 teachers and school principals, of which we received 130 responses, a response rate of 88% that can be considered excellent (Borgatti et al., 2006). In social network analyses, instead of the number of participants, relationships are the unit of analysis and, therefore, an indication for the number of observations. The smallest school team had 30 relations (school team N; 6*5), the largest school team had 156 relations to study (school team A). On average the teams had 80 relations. This sample size is comparable with other social network studies in education (see the sample sizes of e.g., Brouwer et al., 2020; Brown et al., 2020; De Lima, 2008; Sinnema et al., 2020). Table 4.2, in which the school teams are ordered based on team size, presents sample information. Within all school teams, women are in the majority. The average age of each team is between 35 and 51 years. Table 4.2 Sample Information School teams n Total network n School principals n Teachers (coaches) Response rate Missing respondents A (voc) 16 1 12 (2) 81,3% 3 (18,7%) B (voc) 14 1 11 (1) 85,7% 2 (14,3%) C (voc) 12 1 9 (1) 83,3% 2 (16,7%) D (voc) 12 1 10 (2) 91,7% 1 (8,3%) E (sec) 12 1 10 (1) 91,7% 1 (8,3%) F (prim) 12 1 10 (2) 91,7% 1 (8,3%) G (prim) 11 1 8 (1) 81,8% 2 (18,2%) H (prim) 10 1 9 (2) 100% - I (prim) 9 1 8 (1) 100% - J (voc) 8 0 7 (1) 87,5% 1 (12,5%) K (voc) 8 0 7 (1) 87,5% 1 (12,5%) L (voc) 8 1 6 (1) 87,5% 1 (12,5%) M (prim) 8 1 4 (1) 62,5% 3 (37,5%) N (prim) 6 1 5 (1) 100% - Total: 148 12 118 (18) 88% 12% Note. Voc = vocational education teacher teams, sec = secondary education, prim = primary education.

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