Carrie Ann Inaba -- President Obama Went to My High School!

"Dancing with the Stars" judge Carrie Ann Inaba is super accomplished ... but she's definitely NOT the most famous person to graduate from her high school ... not even close.

C.A.I. was leaving Fred Segal in L.A. yesterday ... when she told us a pretty cool fun fact -- she went to the same high school in Hawaii as President Barack Obama.

Buuuuut ... Inaba might not even be the #2 biggest celebrity grad from the Punahou School in Honolulu either -- 'cause that place has churned out LOADS of famous people ... including:

-- Manti Te'o ('09) ... Notre Dame football star, 2012 Heisman Trophy finalist
-- Kelly Preston -- actress, married to John Travolta
-- Hiram Bingham III ... former U.S. Senator (Conn.)
-- Kaui Hart Hemmings ... wrote the book "The Descendants"
-- Ellery Chun ... invented the Aloha Shirt.
-- Charles L. Veach ... former astronaut

... and TWO former Miss USA winners.