How to read an education index
A calm guide to indicators, rankings, missing data and fair comparisons.
An index compresses several indicators into one score or ranking. That can be useful, but the neat number is never the whole story.
Ask five questions
- What is measured? Read the indicator definitions.
- Who is missing? Look for countries, schools or learners without data.
- How are indicators weighted? A weighting is a judgement, not a natural law.
- Are years comparable? Check dates, methods and revisions.
- What decision can this support? Use an index to begin inquiry, not end it.
Prefer the underlying data
UNESCO’s Institute for Statistics is the official source of internationally comparable education data for UNESCO. Its data browser lets readers inspect indicators rather than relying only on a headline rank. Open the UIS Data Browser.
The World Bank’s Education Statistics portal also provides internationally comparable education indicators and documents coverage and sources. Open World Bank Education Statistics.
A ranking can describe a modelled comparison. It cannot, by itself, explain classroom experience, fairness or what should happen next.