Stoudemire, 29, who entered the NBA straight out of Cypress Creek High School in Orlando, has enrolled in summer classes, the South Florida Sun-Sentinel reported Wednesday.
He posted on his Twitter account: "Just enrolled at the University of Miami. Working on continuing my education."
He included a photo of himself making a "U" sign.
Stoudemire missed a playoff game against the Miami Heat after he punched a fire extinguisher enclosure following a recent loss at AmericanAirlines Arena, the Sun-Sentinel said. The Knicks were knocked out of the playoffs by the Heat.