Hello Deeptanshu Manhas,

See, the problem with you is that your mother's name has now been registered with the CBSE board examination. So to correct in this case you need to publish this in at least 2 daily national newspapers.

Get these cutting of these newspapers and then submit them with the affidavit in your school.

For further issues please do contact the administration office of your school and resolve this issue as soon as possible.

HOPE THIS HELPS