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ICCS 2009 Technical Report - IEA

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Table 9.9: Numbers of NRC responses to the survey activities questionnaire: sampling 114Table 9.10: Numbers of NRC responses to the survey activities questionnaire: 114contacting schools and recruiting school coordinatorsTable 9.11: Numbers of NRC responses to the survey activities questionnaire: 115adapting and translating the <strong>ICCS</strong> assessment materialsTable 9.12: Numbers of NRC responses to the survey activities questionnaire: 116assembling and printing the <strong>ICCS</strong> assessment materialsTable 9.13: Numbers of NRC responses to the survey activities questionnaire: 116administering the booklets and questionnairesTable 9.14: Numbers of NRC responses to the survey activities questionnaire: 117national quality control monitoringTable 9.15: Numbers of NRC responses to the survey activities questionnaire: 118scoring open-ended response items and coding occupation dataTable 9.16: Numbers of NRC responses to the survey activities questionnaire: 118entering and submitting dataTable 9.17: Numbers of NRC responses to the survey activities questionnaire: 119other experienceTable 11.1: Item total-score correlations and weighted item fit for international 132calibration sampleTable 11.2: Percentages of scorer agreement for open-ended <strong>ICCS</strong> test items 135Table 11.3: Gender DIF estimates for retained test items 136Table 11.4: Percentages of omitted and invalid responses for test items 138Table 11.5: Example of item statistics provided to national centers 141Table 11.6: National items excluded from scaling 142Table 11.7: Final item parameters used to scale the international test items 144Table 11.8: Estimated <strong>ICCS</strong> booklet parameters 145Table 11.9: Median test reliabilities across booklets for national samples 146(Cronbach’s alpha)Table 11.10: Proficiency level cut-points and percentage of students at each level 148Table 11.11: National items excluded from the <strong>ICCS</strong> equating procedures 150Table 11.12: Item parameters and average percentage correct for link items 151Table 11.13: Test reliabilities for link items (Cronbach’s alpha) 152Table 11.14: Item parameters, item fit, and item-total correlations from tentative 153calibration of European regional test itemsTable 11.15: Reliabilities for European test items 154Table 11.16: Item parameters, item fit, and item-total correlations for Latin American 154regional test itemsTable 11.17: Reliabilities for Latin American test items 155Table 12.1: Reliabilities for scales reflecting students’ behaviors 166Table 12.2: Item parameters for scales reflecting students’ behaviors 167Table 12.3: Reliabilities for scales reflecting students’ perceptions of the school 169contextTable 12.4: Item parameters for scales reflecting students’ perceptions of the school 170contextTable 12.5: Item parameters for scales reflecting students’ support for democratic 173value beliefs8<strong>ICCS</strong> <strong>2009</strong> technical report

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