CBSE class 12 result 2017: Huge discrepancy in marks noted; officials admit verification requests unprecedented Central Bureau Of Secondary Examination Has Admitted To A Huge Error In Marks Totalling In Class 12 Board Examination 2017. According To A Report, An Unprecedented Number Of Students Have Applied For Verification Following Sharp Discripencies Between Marks In One Subject As Compared To Their Average. News Nation Bureau | Edited By : Arshi Aggarwal | Updated on: 18 Jun 2017, 01:10:07 PM New Delhi: Central Bureau of Secondary Examination has admitted to a huge error in marks totalling in class 12 board examination 2017. According to a report, an unprecedented number of students have applied for verification following sharp discripencies between marks in one subject as compared to their average.