A student sits the national college entrance exam in Korla, Northwest China's Xinjiang Uygur autonomous region, June 7, 2012.This year 9.15 million students will sit the national college entrance exam, or gaokao, on Thursday and Friday, with an expected average admission rate of 75 percent, the Ministry of Education said. [Photo/Xinhua]

Parents and family members watch students walking into a center for the national college entrance exam in Taiyuan, North China's Shanxi province, June 7, 2012. [Photo/Xinhua]