Analysis of ILSA data using the IEA IDB Analyzer
The IEA IDB Analyzer is a free tool developed by the IEA for working with data from international large-scale assessments conducted by the IEA and the OECD. It does not require advanced programming skills. The software automatically generates scripts in SPSS, SAS, or R, taking into account the specific features of these studies (including the sampling design and the computations required for correct analysis of results). The tool also facilitates merging data from different files, for example combining students’ responses with information about their schools or teachers. This means that, with just a few clicks, you can prepare a dataset that allows you to examine how students’ results differ depending on selected school characteristics.
Analysis of ILSA data using the R intsvy package
The intsvy package in R is a tool for users who want to analyse data from international large-scale assessments (ILSAs) such as PISA, TIMSS, PIRLS, ICILS, or PIAAC. It streamlines work with large datasets and helps users move more quickly from raw files to results, without having to manually perform many repetitive steps. With intsvy, you can efficiently compute, for example, means, percentages, and percentiles, as well as produce simple analyses of relationships and create charts.
Analysis of ILSA data using the R Rrepest package
Analysis of ILSA data using the Stata repest package
Repest is a Stata package developed by OECD analysts that supports the analysis of data from international large-scale assessments by automating many of the steps required to obtain correct results. This makes it easier to work with large datasets and to move more quickly from raw files to outputs, without manually performing repetitive calculations. It is also a good solution for users who are just starting to work with international assessment data and want to base their analyses on well-established procedures.





