World without adults

Aquila: Not a world without adults, but an island

Aquila: Not quite a world without adults, but a boy wakes in a clearing full of kids

Aquila: Doesn't stay true for long even in the books, but probably counts.

Aquila: Bunch of kids & teens surviving in a mall post-apocalypse, doesn't stay kid only.

Aquila: Children over ten live away from adults.

Aquila: About finding a group of adult survivors, so not child only for long?

Aquila: Not an "all adults are dead" story, just kids being left behind in an evacuation.

Aquila: A bit different, a girl inherits money and starts a town just for teenagers.

Aquila: Novelisation from the NZ TV show

Aquila: Some kids get transported to a world ruled by children