Dear Aspirant,

Generally all the colleges ask for the proof of your completion of 12th class. You can submit them Character Certificate of your son/daughter. For this you have to visit your son/daughter school. You can easily ask from the school principal to make a character certificate for your son/daughter. It includes the thing that your son has completed 12th from this school.

And then you can submit it as a proof to the college .

Hope this helps.