Has CBSE passed an order? Have you received the order copy? If yes show it an able lawyer at your location.
The school gets the certificates/testimonials at the time of admission in school and relates with correct name of father/mother/student and marks ‘OSV’ and gets forms filled by student before each board examination.
You may get these forms also from school and check if you made an error or school made an error?
It is not understood by court order is required?
The spellings in the name in 10th should be carried forward to 12th.
At the most the self attested copies of KYC docs of mother be attached e.g. Pan card/Aadhar Card/Voter Card/Passport etc……………….