Indian pupils listen to a radio broadcast of a speech marking Teachers' Day at a school in Bhopal, India, 04 September 2015. Teachers' Day commemorates the birthday of Sarvepalli Radhakhrishnan, the second President of India who as both a teacher and philosopher made a significant contribution towards the Indian education system, and is observed on the 05 September throughout India since 1962. (Photo by Sanjeev Gupta/EPA)
