Recently, CBSE decided to increase the deadline for the Dispute Redressal Mechanism Registration for the students of classes 10th and 12th who gave their Term 1 examinations till April 20, 2022. This happened because a lot of schools could not submit their disputes within the time frame allotted by the board before which was 26 March for class 10th students and 31 March for class 12th students.
If any of the students have a dispute that needs to be resolved they need to submit it to their respective schools in writing, if the issue can be handled at the school level then the school has to resolve it and communicate about it to the students in writing. If the school fails to resolve the issues then they have to send it to CBSE combining all the disputes together on their official website - cbse.nic.in and cbse.gov.in.
Source: The Indian Express