NEW DELHI: The Delhi high court on Monday issued a notice to the Centre and CBSE on a plea by the National Students’ Union of India (NSUI), alleging “large-scale irregularities and deficiencies” in the newly introduced On-Screen Marking system. A vacation bench of Justices Neena Bansal, Krishna and Madhu Jain sought responses from the department of education and the board, and listed the matter for June 12.CBSE standing counsel MA Niyazi argued that the plea was filed by a political body. “It is a student wing of a political party. We do not want the education to be politicised like this,” he said.The NSUI counsel countered that while the organisation is associated with a political party, such affiliation does not disqualify it from filing a petition.The plea, filed on May 29 by NSUI chief Vinod Jakhar, contends that the board’s repeated public clarifications regarding the OSM system have raised concerns among students and the public about the integrity of the evaluation process. It seeks directions for manual rechecking and physical verification of answer sheets where students dispute the accuracy of scanned copies or the evaluation process.The petition states that “students cannot be made to suffer because of deficiencies in a system introduced by the authorities themselves”.