 George Giberti, principal of the Scofield Magnet Middle School for the 2006-2007 school year, was reassigned as principal at Rippowam for the school year beginning in the fall of 2007.Schools Superintendent Joshua Starr said Giberti has experience in raising math scores and has been in charge of large traditional middle schools in New York City and Long Island.Giberti switched places with Jan Grossman, who took over Giberti's job at Scofield, where she had previously been assistant principal.