At Chart-Ed, we believe that good questions begin with good data. Every chart we use—whether for building student questions, classroom prompts, or engaging activities—is selected with care. But just as important as the chart itself is our responsible and transparent use of it.
We prioritize charts that:
Some of our charts come from sources like Statista, which generously permits educational question-building based on their visualizations (as long as the original chart is not manipulated). Others are from public repositories where both the chart and underlying data are open to interpretation, remixing, or adaptation.
Where possible, we also provide a snapshot of the license or usage terms, to ensure you can trust how the data is being handled. All logos and images used below are for reference only and are linked back to the source site for clarity.
Below is a growing list of the chart sources we actively reference, along with a summary of how each allows us to use their charts for learning and classroom purposes.
The Met's Open Access initiative allows the use and adaptation of public domain artworks for any purpose, including commercial educational content.
NCES publishes comprehensive education data and charts from U.S. federal surveys. These resources are in the public domain and free for any use.
OpenStreetMap offers editable, license-compliant map data under ODbL. It's widely used in educational applications for geospatial analysis.
Our World in Data offers open-source charts and datasets on global trends. Their license allows full reuse and adaptation in educational content.
Smithsonian Open Access provides millions of digital assets, including cultural visualizations, under a fully unrestricted CC0 license.
Statista provides visually polished infographics across many domains. We use these charts unmodified to support critical-thinking questions and interpretation tasks.
Statistics Canada provides national datasets and visuals under its Open Licence, which supports adaptation and commercial use with attribution.
WHO's International Classifications (e.g., ICD-11) are available under CC BY-ND 3.0 IGO, allowing unmodified commercial use with proper attribution.
This list is regularly updated as we add new sources and review existing partnerships. For questions about our sourcing approach, please contact us.