You want a memorial to Ray Charles, in your yard? 
American Forests will sell you a live oak tree propagated from the live oak Charles knew as a youth at his school, in St. Augustine, Florida. It’s part of their “Famous Trees” program.
We looked at a lot of famous trees, including Austin, Texas’s Treaty Oak, and the Wye Oak in Maryland, for our son’s Eagle Scout project at the Dallas-Fort Worth National Cemetery, but utlimately found nothing exactly fitting. A school could have quite a forest of trees from Thomas Jefferson, George Washington, Dwight Eisenhower, Theodore Roosevelt, and now, Ray Charles.
Most trees are about $40.00. Will your PTA finance your planting a grove of historic trees at your school?
The Wye Oak, in its glory (prior to June 2002). Photo from Jeff Krueger’s Historic Trees Project, accessed May 12, 2007.
Millard Fillmore's Bathtub 