What are the 3 factors that are used to grade eggs?

Eggs are graded based on three main factors: exterior quality, interior quality, and size. Exterior quality assesses the shell's cleanliness, texture, and integrity, while interior quality evaluates the freshness and condition of the egg white and yolk. Size refers to the weight of the eggs, with larger eggs typically receiving higher grades. These factors help determine the overall quality and market value of the eggs.