India, May 30 -- A blog post by a Class 12 student from Jharkhand has become the focal point of a nationwide political controversy over the Central Board of Secondary Education's (CBSE) On-Screen Marking (OSM) system. It has drawn responses from the Leader of the Opposition, the Aam Aadmi Party chief, and other senior leaders and activists and citizens , prompting the CBSE to defend its procurement process.

Sarthak Sidhant, 17, published his findings at his website, sarthaksidhant.com/coempt, after spending several days reviewing tender documents on the Central Public Procurement portal. This came after a fall in CBSE pass percentage led to questions over the OSM system, and some students reported errors and mix-ups.

Sidhant's blog, tit...