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. 2023 May 31:1–14. Online ahead of print. doi: 10.1007/s10008-023-05548-0

Table 3.

A summary of the codes used in our curriculum analysis

11–14
X
14–16
Y
16–18
Z
International grade 6 7 8 9 10 11 12
Approximate age of students* 11–12 12–13 13–14 14–15 15–16 16–17 17–18

*Actual age of students will be dependent on their birthdays and the school calendar for each country