[ 
    {"student_id":"123" , "fname":"Barbara" , "lname":"Burns" , "sex":"F"  }, 
    {"student_id":"124" , "fname":"David" , "lname":"Runyon" , "sex":"M"  }, 
    {"student_id":"125" , "fname":"Patrick" , "lname":"Stack" , "sex":"M"  } 
]