While reported inclusion of the principles in some form is practically universal, only 21% of countries reported that the teaching hours dedicated to them were 'fully sufficient’ (Figure 14.1). All responding countries in the Arab States, which suffer some of the largest numbers of victims of conflict, included the topic in curricula, compared with between 36% and 74% of countries in other regions. Hence student-level data from the IEA International Civic and Citizenship Education Study (ICCS) offer an important complementary perspective. Questions in the 2016 ICCS provided interesting insights into students' values and attitudes, especially relating to thematic indicator 4.7.4 - 'Percentage of students by age group (or education level) showing adequate understanding of issues relating to global citizenship and sustainability' (Data focus 14.1).