Indian Administrative Service officer Prashant Sitaram Lokhande has been appointed Chairman of the Central Board of Secondary Education (CBSE) and Varun Bhardwaj, a 2008-batch Indian Information Service officer, has been made Secretary of the education board that's firefighting a massive row over alleged irregularities linked to the on-screen marking (OSM) system, including the manner in which the CBSE gave a contract to a controversial private company.