In Norway, this can be explained by an above OECD average time children spent on intentional pedagogical or educational activities, above-average contact time of teachers with children, average level of teacher salaries, and below-average estimated group size. In the Netherlands, there were above-average teacher salaries, average contact time of teachers with children, and small estimated group size compared to the average, however, these were more than offset by a significant below-average amount of time children spent on intentional pedagogical or educational activities (Figure 3.3). For example, because of Luxembourg’s high USD salaries, it has by far the highest salary cost in pre-primary education: at USD 9 729, it is over triple many countries shown in Figure 3.3.