Obtaining high quality geographic information systems (GIS) data depends on effective field data collection. Poor field collection wastes labor resources and ultimately undermines the value of your GIS database.
GPS receiver capabilities range from survey grade (centimeter level accuracy) to consumer grade (~5-meter level accuracy). Of course, this demands a cost-benefit tradeoff ranging from free to prohibitively expensive for most educational institutions. Between these two extremes lies mapping grade GPS, which delivers 1 meter accuracy.