Horses in Photo Finish™ Live are graded based on their genetics. 

The Grades are:

• D
• C
• B
• A
• S
• SS
• SSS

D is the lowest grade, and SSS is the highest. Each grade is subdivided as such: S-, S, S+.  

A horse’s attributes (Start, Speed, Stamina, Finish, Heart, and Temper) are also graded (though these can’t be seen till retirement). 

Each of these grades shows the horse’s strength in that specific trait. A horse’s Grade is the average of its attribute grades.

Grades are a range. An S grade is not a single number, but a range of numbers. Two horses with S grade Start will have very similar Start, but may not have the same value.