A Bartow County math teacher has been arrested and charged with sexual assault.  According to reports, twenty-five year old Matthew James Stewart of Adairsville has been placed on leave pending an investigation.  Details of the assault have not been released to the media concerning the nature of the alledged sexual assault.  Stewart was arrested Thursday by a school resource officer and placed on administrative leave by Bartow County School Superintendent John Harper.  Stewart taught math and coached girl’s and boy’s track in Bartow County.