Wagyu Beef carcasses are graded between the sixth and seventh rib. Grading is based on two, very specific factors: Yield and Grade. Yield meaning the ratio of meat compared to the actual carcass weight. Grade meaning the overall Beef Marbling Score (BMS), Beef Color Standard (BCS) , Beef Fat Standard (BFS) , Firmness & Texture. In order to qualify as A5 Japanese Wagyu, beef must be graded as Grade A for yield and Grade 5 in BMS, BFS, BCS, firmness and texture.