Question

what could "unschooled like a map of the world" mean.

Answer 1

in a poem

Answer 2

That's a bit out of context. However, think critically about a map of the world and the setup of a school, especally a classroom. Does the world follow the lines of geometry, square desks, and long hallways, circle pencil cups?

To me it would indicate a wilder side of the subject, as if he can behave like an unschooled child and make his or her own lines and rules, much like the map of the world could.