I do some research on schools and students distribution. I created two kernel density rasters using Kernel Density tool. After this I subtracted one raster from the other to find out that I am looking on over or undersupply of school services. I would like now to summarize cell values for specific area units (polygon feature class). I tried to export raster to point feature class, and spatially join with polygon feature class with hope of summarizing it during dissolving, but it does not work. I am working on a really small subset of my data, but the spatial join did not work due to memory issues. Is there any way to join my raster directly to polygon feature class and summarize cell values within each of the polygons? Thank you a lot for any suggestions!