From class seven to class twelve, I was at the same institution. Should I separate the Secondary School and Higher secondary school from class/grade seven so that I can give the results of board exams?
It depends where you are in your career. In general you only want to list the last education you have. If you are into your career and went to college, you’d only list that, or only your high school if that’s all you have.
Now, if you aren’t into your professional career yet and are putting together a resume for some kind of school admission, it very much depends on your country and the kind of school you are trying to get into how much of your school history is relevant, but you’d need to ask that (with those details) on Academics.SE or to a school counselor.