Every race in UK is classified as 1-6 already with additional classifications in Class 1 as Gr1, Gr2, Gr3, & Listed (although Gr2 is not necessarily higher than Gr3)
Alternatively you could class races by their prize-money, which is usually a good approximation of their general worth etc, although this wouldn’t be as useful at the top end
What I want to do is give each horse in the race a figure for class, so that each horse gets a rating.
I have tried prize money divided by wins, but i was hoping that someone might have some more ideas.
You’re right – and this rating gives one of the most reliable assessments of a horse …. he also states that it must be used as a guide in conjunction with other factors such as consistency, speed figures, handicap ratings, race selection, betting forecast etc.