Here is another take on the Lawrence Township School Districts,

I took the parcel outlines from mercer county and associated them to schools via a ruby script, as an output we have a set of shape files.


Then I converted them to points using qgis “extract nodes”



Then I used the voronoi polygons on them to calculate regions,


and clipped it with buffered region

Finally I dissolved all the borders between the school regions to give the simple borders:

lawrenceFinally I used the qgis web export to create a website :

(export to web map)

You can find my scripts to convert and look up the data here:

and the data for the school districts here: