I've created a point density heat map for a city intended to show areas where there is more or less access to a certain type of public school.
It would be useful to be able to identify which local political districts have the greatest or least access (by proximity) to this type of school. Important here is not just measuring distance to any one school (as in distance to closest point). Rather, access to multiple schools (i.e. greater density) should be rewarded. I want to be able to say something like, "students in District A wishing to attend a school like this have, on average, more nearby options than students in District B." Schools don't need to be in a particular district to be considered an option for the students in that district (so points outside a particular polygon can be considered). In the end, I want some kind of rank or value to compare the districts.
Any suggestions? Looking at the heat map, something equivalent to the average density value would make sense, but maybe there's another tool?
Extra great would be the ability to weight by population density somehow (maybe by census tract)?
I'm using ArcMap 10.3.1
Here's a screenshot of the raster heat map, with political district shapefile overlaid: