Yes, we just recently relocated to the Sinking Spring area and found the school zoning and post office locations somewhat confusing. We moved from out of state are not familiar with townships,etc...
My suggestion would be,if you are looking at homes with a realtor,be sure to ask them to verify the school district.
I spent many hours prior to moving on schoolmatters.com to try to educate our family on what the best areas would be.
Wilson School district seems to have a really great reputation and our experience so far with our child's elementary school has been wonderful.
We were also looking at homes in the Conrad Weiser area but settled on the Wilson school district.
We did find that there were many new builds available on the Conrad Weiser area but really were focusing on a particular elementary school which is in the Wilson School District.
As far as the townships.. I had a "funny" and slightly confusing conversation with a person at the Lower Heidelberg Township office a few weeks after moving here. We had some questions about our trash pickup and they woman informed me that we do not live in Sinking SPring,that NO ONE actually lives in Sinking Spring but our post office is Sinking Spring... So I asked here where I actually live and she said I live in Lower Heidelberg?
I asked her why there are street signs indicating Sinking Spring and she said that there isn't....
well,if you drive around,there certainly are signs that say Sinking Spring so I am just still somewhat confused about this whole thing... in any case,our mail is delievered to my address which says Sinking Spring
Good Luck with your decision,so far,we are happy with ours. Although,it has been harder as an adult I believe to adjust but our children are doing great!