New Delhi: Even as the Central Board of Secondary Education (CBSE) faces criticism for portal crashes, payment errors and blurred scan copies during the post-process of Class XII results, a new case shared by a student on social media has raised concerns about the board’s On-Screen Marking (OSM) system.Vedanta Shrivastava, a Class XII student, alleged that the Physics answer sheet uploaded by CBSE under his roll number during the photocopy access process did not belong to him. The student claimed that the handwriting, answers and presentation in the uploaded copy were completely different from his own writing style and questioned whether his original answer sheet was ever reviewed.The student claims that the physics copy uploaded belongs to another candidate.In a series of posts on X, Vedant said his family and teachers immediately noticed discrepancies after comparing the physics answer sheet he uploaded with his English and computer science papers.“The physics answer sheet sent by CBSE is not my answer sheet at all. I know it is not my handwriting and does not contain the questions I attempted,” he wrote.“Not just me—my family, teachers, and everyone who knows my writing felt the difference immediately.”The student added that the English and computer science answer sheets “obviously match each other”, while the physics paper “looks like a completely different student”.“The handwriting style, the letter formation, the spacing, the italics, the sentence flow – everything is different. This is not a minor variation. It is completely different writing,” he wrote.Vedanta claimed that the disparity affected its overall marks and eligibility criteria.“I got 50% marks for answers written by another student. Where is my original answer sheet? Where are my original marks? That’s why I am not getting 75% in PCM aggregate,” he said.The student questions the transparency of the OSM system.The student also linked the issue to broader concerns already being raised by Class XII candidates about the digital assessment process.“CBSE said that OSM will improve transparency and fairness. But if answer sheets are being matched by themselves, then how should students trust the process?” he wrote.He urged the board to verify its “original physical answer sheet”, audit the scanning and tagging process and investigate whether answer sheets were exchanged during digitisation.Vedanta also later said in a post that ABP News had informed him that CBSE would take “necessary action” regarding the matter.The allegation comes amid nationwide complaints about portal failures, delayed access to scanned copies, payment deductions and evaluation-related discrepancies following the declaration of CBSE Class XII results earlier this month.