There is no standardized system of grading in the United States. Put simply, it is a set of criteria for grading assignments. Medical schools use a variety of different grading methods. Histologic analysis is necessary for grading diagnosis. There is no universally accepted method of grading colored gemstones. Countries have differing standards for grading honey. He rejected tests, grading and ranking systems. This includes the paths of roads and highways defined by their grading and drainage control. Severity is measured using various concussion grading systems. There is no universally accepted scale for grading acne severity. It is part of Uniform Tire Quality Grading standard. Different countries in Asia have a variety of grading scales. Fabric type also influences pattern grading standards. The allocation provided for clearing, grading, and leveling a runway long by wide. UC Berkeley has a reputation for rigorous grading policies.