Wow, that <i>is</i> quite a feature! So you're able to save that defined map and make it accessible by a public permalink?  

If people make a comparison with the text description (at http://www.ray.cps.k12.il.us/boundaries/boundaries.htm) you can see that there is no comparison! As has been observed down the ages, the picture communicates more and more-directly.  Only if you live on a boundary street and need to see ëven side" or "both sides" spelled out, would the text version be a useful adjunct.

And seeing the map also makes clear the oddity of the neighborhood attendance system together with the options.  The text version notes that Shoesmith, Murray,and Harte are optional choices for some of the eligible-for-Ray area, but neither the text nor the map specifies where the options are or how they work.  Well that's okay,parents will need to consult other resources in any event.  Still it's odd to notice (implicit in the text but clear on the map) that the Ray-eligible area actually includes the location of the Murray school building itself!