Poultry Grading Manual
The Poultry Grading Manual is a guide to the uniform application of the U.S. Department of Agriculture (USDA) classes, standards, and grades for poultry, and to USDA’s voluntary poultry grading and certification services. It can also serve as the course outline for a poultry grading school.

U.S. grades are based on nationally uniform standards of quality developed by the Standardization Branch. These standards promote uniformity and assurance of product quality on a continuous basis regardless of supplier. The official USDA grade shield indicates the product's quality level.