ICCS 2009 Technical Report - IEA

Table 12.29: Item parameters for scales reflecting teachers’ perceptions of classroom climateScale or Item Question/Item Wording Delta Tau(1) Tau(2) Tau(3)Social Problems Please indicate how frequently each of the following problems occurs among students at this schoolIT2G14A Vandalism 0.66 -1.79 1.79IT2G14B Truancy -0.93 -2.54 2.54IT2G14C Racism 2.29 -1.52 1.52IT2G14D Religious intolerance 3.00 -1.31 1.31IT2G14E Bullying 0.18 -1.89 1.89IT2G14F Violence 0.76 -2.00 2.00IT2G14G Sexual harassment 3.21 -1.62 1.62IT2G14H Drug abuse 2.96 -1.62 1.62IT2G14I Alcohol abuse 2.25 -1.60 1.60Students’ In your opinion, how many students in this school …BehaviorIT2G17A are well behaved on entering and leaving the school premises? -3.35 -4.94 -0.67 5.60IT2G17B have a positive attitude towards their own school? -3.02 -5.12 -0.38 5.49IT2G17C have a good relationship with the school teachers and staff? -4.41 -5.78 -0.35 6.13IT2G17D show care for school facilities and equipment? -2.32 -4.98 -0.45 5.43IT2G17E are well behaved during breaks? -3.17 -5.59 -0.38 5.97IT2G17F show they feel part of the school community? -2.79 -4.87 -0.08 4.95Classroom In your opinion, how many of your students …ClimateIT2G20A get on well with their classmates? -5.33 -6.28 -0.97 7.26IT2G20B are well integrated in the class? -5.25 -6.82 -0.44 7.27IT2G20C respect their classmates even if they are different? -3.93 -6.14 -0.15 6.29Question 17 related to issues concerning students’ behavior at school. Teachers were asked tostate how many students exhibited such behaviors (“all or nearly all,” “most of them,” “some ofthem,” “none or hardly any”). The items for this question were used to form the scale teachers’perceptions of students’ behavior at school (TSTSBEH). The higher scores on this scale, which hada reliability of 0.87 for the pooled ICCS sample and country reliabilities ranging from 0.73to 0.90 (see Table 12.28), related to larger numbers of students exhibiting positive behaviors.Table 12.29 shows the item parameters that were used for scaling.In Question 20, teachers were asked to rate how many of their students interacted with theclass and other students (“all or nearly all,” “most of them,” “some of them,” “none or hardlyany”). The question items, all of which concerned student relations and integration, were usedto construct the scale teachers’ perceptions of classroom climate (TCLCLIM). The higher TCLCLIMscores indicate a more positive classroom climate. Scale reliability was 0.87 for the pooled ICCSsample; the national reliabilities ranged from 0.77 to 0.93 (see Table 12.28). Table 12.29 showsthe item wording as well as the item parameters that were used for scaling.206ICCS 2009 technical report