The South African Grade 4 learners had the lowest achievement mean of all participating education systems for the Progress in International Reading Literacy Study (PIRLS) 2006. Further investigation was required to explore the potential reasons for the low performance. Although traditionally, secondary analyses of the data for international comparative studies of learner achievement have involved quantitative procedures, the mixed methods research design used for this study with emphasis placed on the qualitative phase was a unique departure from this methodological status quo. The aim was to explore schooling conditions and teaching practices for Grade 4 learners' reading literacy development across the range of South African education contexts. In the first phase of the research, teacher and school survey data linked to a nationally representative learner sample (n ¼ 14,299) for the PIRLS 2006 were used for description of Grade 4 teachers' instruction practices and schooling conditions. This description took place on the basis of the reclassification of the teacher and school survey data according to class language profiles and average class performance as aligned to each of the achievement benchmarks of the PIRLS 2006 and further benchmarks created to describe the performance levels of the majority of South African learners. Thereafter, in the second phase, seven qualitative school and teacher case studies from each reclassification subsample were purposively selected to add illuminatory depth to the study. The sampling strategy allowed for scrutiny of cases with high PIRLS achievement profiles against cases with poor achievement profiles, and the comparisons afforded a far greater understanding of the problem. This article reflects on the methodological rationales, processes, and outcomes associated with this methodological choice.
The Progress in International Reading Literacy Study (PIRLS)is an international assessment study of reading literacy at Grade 4 that is conducted every 5 years by the International Association for the Evaluation of Educational Achievement (IEA). Forty countries and 45 education systems participated in the PIRLS 2006. In South Africa, more than 30,000 Grade 4 and Grade 5 learners were assessed using instruments translated into the 11 official languages of the country. The Grade 5 learner sample was included as a national option in South Africa to track achievement progression in the education system. The PIRLS 2006 focused on (a) processes of comprehension, which involved being able to focus on and to retrieve explicitly stated information, to make straightforward inferences, to interpret and to integrate ideas and information, and to examine and to evaluate content, language, and textual elements; (b) purposes for reading, which included the examination of literary experience and the ability to acquire and to use information; and (c) reading behaviors and attitudes toward