Two rows of students, considered naughty or not performing well academically, sit an exam outside a classroom at a middle school in Jinxian county, East China`s Jiangxi province, Nov 8, 2011. The temperature dropped by a dozen degrees and many students were shivering in the cold. [Photo/CFP]

Students who are considered naughty or who are not keeping up with the class academically sit an examination outside at a middle school in Jinxian county, Nov 8, 2011. Some students wear their hoods due to the low temperature outside the classroom. [Photo/CFP]