Indian school children prepare for their [Getty Images]

Indian school children prepare for their Central Board of Secondary Education (CBSE) senior school certificate examinations for Class XII standard, by looking at their textbooks in the last moments before entering an examination hall in New Delhi on March 1, 2012. The CBSE has for the first time, made the Class X exam optional this year onwards, a large percentage of students have chosen this option. This is seen as an attempt to reduce the exam related stress. AFP PHOTO/RAVEENDRAN (Photo credit should read RAVEENDRAN/AFP/Getty Images)

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