Dear Preet, was the mistake in entire school name or just a part of it. For example, if your School's name is St. John's English Medium High School but you wrote it as St. John's Convent High School, even that is accepted. If only the school's name is wrong but the address and pincode are correct, you are good You shall not have any issues. Eitherways during document verification, because you will be shoeing your original documents, there will be no problem in this.