Data
We compiled all the data on indicators, subindexes and the overall EfDI in an Excel datafile.
We also note that some of the data, particularly for federal states, pertains to the regional rather than national level. This applies to the regions of England (United Kingdom), Flanders (Belgium), Hong Kong (China), and North Rhine-Westphalia and Schleswig-Holstein (Germany). We treated these regions as separate countries. As a result, data on national policies, such as the period of compulsory education or whether citizenship education is included in the lower secondary curriculum, applies to these regions rather than the countries to which they belong.
Literature Review
We found as many as 350 relevant studies and provide more details on the findings of these studies in this document.
Indicators Document
The indicators document offers a detailed overview of the indicators and the educational areas they represent. This document also explains how the indicators were calculated and combined into the policy and practice sub-indexes for each area and how these subindexes, in turn, were merged into area subindexes. The indicators are further marked with different colours to show whether they are included in both Performance levels and Equality subindexes or only in one of them.