I agree with your point, but I'm not sure Jeannette is within a 25 mile radius of Pittsburgh. West Greene, Avella and Mapletown certainly are not.Again, within a 25 mile radius of Pittsburgh, there should not be a Single A, public, High Schools.
In Westmoreland County, it's interesting how Greensburg got paired up with non-contiguous Salem Township, but Jeannette didn't get a similar partner.