"I wanted to call and let you know that he has committed to Florida," Orlando (Fla.) First Academy coach Bill Bufton told Scout.com.
"I think it was his dream school," he added. "In his heart that's where he wanted to go and it was the best fit."
Graham took unofficial visits to Florida, Florida State and Central Florida, but didn't feel the need to continue the process, as he had zeroed in on his childhood favorite.
"It's my dream school," Graham said. "I've always wanted to go there since I was a little kid. Coach Billy Donovan offered me and I couldn't turn him down. They feel like family."
Graham spent the summer playing for Matt Ramker's Florida Rams and went from mid-level recruit to a prospect with high major scholarship offers after the adidas Invitational in Indianapolis.
Known for his ability to rip the nets from long range, Graham, a three-star prospect, is one of the top shooters in the class of 2012.
As a junior, Graham averaged 15.8 points, five rebounds and four assists per game.