Are there any Actors of John Robert Powers School as claimed?

The John Robert Powers School for aspiring actors promotes famous people as alumni. However, I cannot locate any such information in the BIOS's of the actors to confirm the claims. Please read their web article below, look at the names of the famous and advise me if any of you can confirm or deny this information. I'm currently researching an article to be written regarding the claims of the JRP Agency. Thank you!

LOS ANGELES, Oct. 31 // -- At the closing gala ceremonies of
this years 9th Annual Hollywood Film Festival, John Robert Powers had the
opportunity to sponsor the event and present the Hollywood Film Awards
Breakthrough Actress of the Year Award. .....
John Robert Powers is an internationally recognized school system with
locations throughout the United States, Europe and Asia. For over eighty
years, John Robert Powers has been training students in acting, singing,
dancing, modeling and etiquette. Emphasizing personality development, John
Robert Powers provides every student with the schooling, guidance, and
confidence to further their individual potential and reach their highest
career goals. Famous alumni thru either the school or the John Robert Powers
agencies include people such as First Ladies, Jackie Kennedy and Betty Ford,
Princess Grace of Monaco, Raquel Welch, Lucille Ball, Ann Margaret, Diana
Ross, Faith Ford, and models Janice Dickinson, Beverly Peele, Nikki Taylor,
Ryan Locke, and Josh Duhamel.