I know that it can be very confusing. I have a complete list of sending areas on my website devoted to West Windsor, http://www.West-Windsor-Homes-NJ.com. Here is the link that will take you directly to that page:
In addition, you will find descriptions of all of the individual communities on the site, as well as which school sending area they are in.
Please let me know if I may be of any further assistance to you.
The best way to confirm the school district is to directly call the individual township(s) school board office and ask - which school does this particular address attend. You may also specify which grades.
This is important not just to answer your higher question of school districts at the regional level but also within a school district itself there are more then one school for each grade level.
And if you are still considering a move - call me directly at 609.240.9879
The best thing for you to do is cal the school district. The school district in turn would probably connect you with the transportation division and they will tell you what school is a allocated to the area you live in.
Call the school district and find out.
Orange Key Realty