EE WAS GETTING OFF MANTRIP(SCHOOL BUS #4) TO GET ONTO HIS EQUIPMENT. AS HE WAS EXITING HIS FEET HE SLIPPED ON THE STEPS RESULTING IN A TWIST TO HIS RT. KNEE. WE WERE INFORMED THAT A MINOR TEAR TO HIS KNEE EXISTED ON 2/13/03 AND THAT THE EE COULD NOT WORK AND MAY NEED SURGERY. AT THIS TIME THE INCIDENT BECAME REPORTABLE.