Over the years growers have made many changes to their cropping systems to improve productivity and enhance environmental sustainability. Crop rotation, manure applications and residue management have long been promoted as best management practices for the soil. Many growers ask the questions “Is what I am doing making a difference?” and “Is my soil healthy?” A number of measures of soil quality or soil health have been developed over the years. Many of them have specific sampling methods that are difficult to take in the field and then relate to management practices. Cornell University recently developed the Cornell Soil Health Assessment. It appears to come the closest to meeting the needs of agronomists and farmers. The purpose of this project is to quantify, validate and calibrate the Cornell Soil Health Assessment relevant to Ontario conditions.