Variation of reading performance within countries
Reading performance and socio-economic profile
Income inequality in the population and strength of the relationship between socio-economic background and performance
Summary of PISA measures of educational equity
Performance differences among the highest- and lowest-achieving students
Percentage of students below proficiency Level 2 and at Level 3 or above
Relationship between school average socio-economic background and school resources
Percentage of variance in reading performance explained by various aspects of family background
Reading performance difference between students from single-parent families and those from other types of families
Reading performance, by school location