Socioeconomic status at the individual- and school-level are positively related to literacy achievement in all English-speaking countries. The components of socioeconomic status -- income, parent education and parent occupation -- are each statistically significant predictors of school literacy achievement but they are primarily a proxy for more…

Each year, all Australian students in grades 3, 5, 7 and 9 sit nationwide large-scale tests in literacy and numeracy which have their validity frequently questioned. We compared the performance of grade 3 twins on these large-scale reading tests with their performance on three individually administered literacy tests in comprehension, word reading…