On a trip today from Murwillumbah to Evans Head NSW we noted many school zones that did not generate an alert, so we logged the locations on the Garmin and then when home added them to the NSW School Zones POI. When adding the POI and locating the school on the Goggle map provided we found the GPS coordinates different from that we logged with the garmin. For example Uki Public School our Garmin showed E153. 20.204 and S 28.24.820 whereas the Goggle map showed the school located at 153.33488 and -28.41420. Should I be concerned with this difference? I added 6 schools today and all had this difference.