Schools for XI and XII

Hi all

My niece is going to 10th std now in CBSE. Seems she has to elect how she wants to continue her education - CBSE or State board. I just wanted to know some best state board schools in and around Mylapore.

I also need some advise on which is better - if she takes science with maths, which is the best - CBSE or state board? and if she takes accounting with maths, which is best - CBSE or state board?

Thank you