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An IERI – International Educational Research Institute Journal

Table 8 Item parameter estimates for school resources availability scale

From: Equity in mathematics education in Hong Kong: evidence from TIMSS 2011 to 2019

Question

δ

SE

τ1

SE

τ2

SE

τ3

SE

1. Instructional materials

− 2.027

0.061

− 8.463

0.147

2.334

0.102

2.736

0.126

2. Supplies

− 1.702

0.065

− 9.259

0.178

2.608

0.107

2.957

0.140

3. School building

− 2.352

0.063

− 7.909

0.137

1.512

0.099

2.798

0.115

4. Heating system

− 1.926

0.060

− 8.666

0.150

3.015

0.107

2.210

0.126

5. Instructional space

− 2.448

0.063

− 7.724

0.132

1.630

0.099

2.547

0.112

6. Technical staff

− 2.125

0.068

− 8.580

0.171

1.205

0.105

2.830

0.113

7. Computer technology

− 2.306

0.067

− 8.092

0.153

1.023

0.104

2.682

0.108

8. Resources for disabilities

− 1.947

0.104

− 9.480

0.353

1.279

0.145

3.589

0.202

9. Mathematics teachers

− 2.353

0.065

− 7.967

0.141

1.511

0.101

2.414

0.108

10. Computer software for mathematics instruction

− 2.173

0.076

− 8.756

0.221

0.388

0.121

2.814

0.110

11. Library material for mathematics instruction

− 1.957

0.075

− 9.135

0.235

0.651

0.115

3.188

0.118

12. Audio/visual resources for mathematics instruction

− 2.110

0.074

− 8.824

0.210

0.517

0.115

3.096

0.113

13. Calculators

− 1.668

0.069

− 9.565

0.205

2.081

0.105

3.409

0.144

14. Concrete objects

− 2.434

0.091

− 8.556

0.238

1.456

0.141

2.923

0.164

  1. Questions 1 to 8 measure general school resources and questions 9 to 14 measure school resources for mathematics. δ: difficulty parameter; τ: Step parameter; : For TIMSS 2015 and TIMSS 2019 only