'He who does not understand your silence will probably not understand your words.'- Elbert Hubbard.
By Determination one can Accomplish anything
Do you have the copy of your Hall Ticket? Was your name spelt correctly on it?
Also, get in touch with your school and collect documents pertaining to your schooling. Get a letter from the principal on the school letterhead, with all your details clearly mentioned, This will come handy when you submit an application to the Education Board office for correction of name.
“You painted a naked woman because you enjoyed looking at her, put a mirror in her hand and you called the painting “Vanity,” thus morally condemning the woman whose nakedness you had depicted for your own pleasure.” - John Berger