Hello
If you are a student and had appeared in CBSE Board exams for class 12th; and you think your Marks and Percentage are not satisfactory you can appear for CBSE improvement exam.
The application forms for Improvement examination will be available from July onward. Each form will cost Rs.10. The forms can be collected from Syndicate Bank branches throughout Delhi and Regional Offices of CBSE for other regions.
The registration date for same is:
31st October (Without Late Fees)
From 01st November To 15th December (With Late Fees)
For more information follow the official CBSE website link
http://cbse.nic.in/
Good luck