As a waymarker I have entered hundreds of waymarks, I also reviewed hundreds of other people’s waymarks in various categories. To check the co-ordinates I use http://benchmarks.org.uk/map.php and http://www.flashearth.com/
Between these two sites you can get a good idea whether the co-ordinates are correct or not.
So now this technology is available to all, why do the reviewers allow caches in inappropriate places such as churches. In the past I have collected a cache under a seat in a church porch, a cache fixed to the back of a drainpipe on a church, and a cache in a parameter wall of a church, the latter is in the process of being moved to a more suitable site. I can not see any vicar/Church Council giving permission for a cache that close to a church.
If you must go into an area around a church you would be very welcome to waymark it instead of planting a cache!!