When working in the Students tab, you can view the school boundaries while looking at the student information.

Example:

Filter for students at a particular school such as Sunshine Elementary School.

Then go to the Operations sub-menu and select “Show School Boundaries”.

You can quickly visually see any students outside of the school boundaries.  You could also then add another filter to select only students that are routed (Filters, Routes, Routed)

Video on routing students outside of the boundary