Citation & License
How to Cite
If you use this tool or visualizations generated by it in your research, please cite:
The Tool:
Schoenholzer, K. (2026). Educational Stratification in PISA – A browser-based statistical tool for exploratory analysis of PISA microdata, 2000–2022. https://kevinschoenholzer.com/edustrat/
The Data Source (learningtower R package):
Wang, K., Yacobellis, P., Siregar, E., Romanes, S., Fitter, K., Dalla Riva, G. V., Cook, D., Tierney, N., Dingorkar, P., Sai Subramanian, S., & Chen, G. (2024). learningtower: OECD PISA datasets from 2000–2022 in an easy-to-use format (R package, Version 1.1.0). https://doi.org/10.32614/CRAN.package.learningtower
The Original PISA Data:
OECD. (2024). PISA 2022 Technical Report. OECD Publishing. https://doi.org/10.1787/01820d6d-en
Free Use & License
You are free to:
- Use all visualizations, estimates, and results generated with this tool in publications, presentations, and reports
- Use the tool for research, teaching, or commercial purposes
- Modify and redistribute the source code with proper attribution
No permission required — just cite the tool and data source as shown above.
Disclaimer
⚠️ Use at your own risk.
This tool is provided "as is" without warranties of any kind. While we strive for accuracy, the software may contain errors or bugs. Results should be independently verified for critical applications.
The views and analyses generated by this tool do not reflect the official position of the OECD or its member countries.
Source Code & Documentation
For complete documentation, methodology details, and source code:
Report issues or contribute improvements on GitHub Issues.
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