Miller averaged twenty three points per game last season at NCHSAA 2-A Clinton HS, and recorded over seventy-five dunks in his junior season. He had been recieving interest from coaches at UTEP, ECU, Virginia Tech, Miami, NC State, Oklahoma, Gerogia Tech, Wake Forest, UNC-Greensboro, UNC-Wilmington, American University, The Citadel, Western Carolina, and others before July 2011 according to his father Dwight Miller. In May 2011, JT suffered a knee injury at the Bob Gibbons Tournament. He is now back to one-hundred percent , and is starting to get interest back from coaches who may have backed off (because of the injury) including Virginia Tech, University of Miami, and Virginia Commonwealth University have also recently watched Miller work out. Clinton HS is now coached by Levi Beckwith, the former coach at Word of God in Raleigh, NC.