An Aiken Elementary School teacher was charged Saturday after a traffic stop by an Aiken County Sheriff's Office deputy reportedly uncovered over 2 pounds of what is believed to be methamphetamine in a car she was driving. Sarah McKinnon, 43, of North Augusta was charged with trafficking in meth or cocaine base 400 grams or more, according to jail records. On Thursday, the Aiken County Public School District confirmed that McKinnon is currently employed at Aiken Elementary School as a teacher but is on administrative leave pending an investigation. The school district states McKinnon has been a teacher for 21 years, serving most recently at Aiken Elementary School where she has been a second grade teacher for the past five years.Â