Nirmala High School in Khairatabad has both CBSE and State Board. How did parents choose?

My children are 5 and 6, both in an ICSE school now. Nirmala High School is on my office route, and I noticed it offers both CBSE and State Board, which I haven't come across in one school before. If you have a child there, how did you choose between the two, and is it difficult to move from one to the other later? I'm also curious which second languages the younger classes start with. At home the grandparents speak Marathi with the children and they reply mostly in English, so I'm paying more attention to languages than I used to. We're only gathering information for now. The commute from Uppal is the other thing I haven't solved.