As a senior, B.J. Mullens was named to the USA Today’s 2008 All-USA boys basketball team and selected as a McDonald’s and EASports All-American, as well as being named a first-team Parade All-American and a Jordan Brand All-American Classic selection.
In both the McDonald’s All-American and the Jordan Classic games, Mullens posted 12 points and three rebounds.  
Mullens averaged 27.4 points and 15.1 rebounds in his senior season en route to earning the Gatorade and RISE Magazine’s Ohio Player of the Year award. With a 71.2 shooting percentage from the field in 2008, Mullens earned MaxPreps third-team All-America honors and shared the honor of Ohio Co-Player of the Year with Ohio State teammate William Buford. Mullens finished second to Buford in the Mr. Ohio Basketball voting.
Mullens, a Division II first-team all-state selection, led Canal Winchester to a district title and two Mid-State League titles, as well as being named the league’s player of the year twice.
Mullens is the son of Barbara McKean and Paul Calhoun. He has five siblings, Gabriel, Tabby, Steve, Danny and Ronald. Mullens lists his greatest sports thrill as setting a school scoring record for Canal Winchester after he recorded 62 points in a 79-69 victory against Our Savior New American (N.Y.). The point total ties for the No. 31 spot in Ohio high school single game scoring records. In the past 25 years, Ohio State players have three of the top four Ohio high school single-game scoring totals-Jon Dieber (77 points vs. Tiffin Columbian, 1/13/06), Mullens (62 points vs. Our Savior New American, 1/21/08) and Jay Burson (61 points vs. Crooksville, 1982-83).