It’s an old school measuring stick but for those interested … the ‘Experimental Free Handicap’ for this year’s Oaks and Derby class from the Jockey Club.
What is the EFH? It is the assigned handicap weights for a hypothetical race at 1 1/16 miles on dirt. (And the JC has been doing it every year since 1935.) Since the lists are assigned according to 2-year-old form exclusively you’d be reading tea-leaves beyond that for 3-yr old form 
How does a horse get on the EFH list? To be eligible, a 2-year-old had to finish in the top four in graded or non-restricted races in the United States with a value of at least $75,000.
Lookin At Lucky and Vale of York are atop the male Experimental roster for 2009 at 126-lbs each; from there it is Noble’s Promise (124 pounds), Buddy’s Saint (123), Pounced (122), Super Saver (122), and Piscitelli (120). Next among fillies after She Be Wild (123) and Blind Luck (123) are Hot Dixie Chick (121), Beautician (120), Negligee (120), and Tapitsfly (119)
The last Experimental highweight to win the Kentucky Derby was Street Sense, who topped the 2006 list before capturing the Derby the following spring.
The 126 pounds for males and 123 for fillies are the traditional standards for Experimental topweights.