I could never called my teenage pupils 'children' in school. The only time I'd call them 'boys and girls' would be with an ironic twinkle.
Personally I used to use 'guys' which I know irritates plenty on here (sorry). In this age, it's seen as gender-neutral.
In class, a general term is necessary. 'Come on, guys. We've only got 5 minutes until the bell'
Soops Kitchen, a place of refuge, reflection and revelry.


