Wipro chairman Azim Premji on Friday said that the government should increase investment in education sector from the ‘claimed’ 2.5 percent of the GDP and hire quality teachers to improve the standard of education in the country. “The government’s claim of 2.5 percent of GDP in education has not been completely realised and the current spend should be utilised with reason,” Premji said, adding, “China spends about 5 percent of GDP on education and the world’s average stands at 6 percent.”