Well I'm talking about the overall rating not just the teachers. You won't find competitive peer group in Hyderabad. I said that because I studied at two of the main centres at Hyderabad - Sri chaitanya DD Colony (11th and 12th) and Aakash for Drop none of them reached my expectations. I firmly believe these are not up to the mark and my friends studied at various institutions like vision 40 and all. They didn't like them. For long term instead of wasting time on these join a good tuitions for individual subjects with some good reference books and trust me these cannot teach you all the three subjects perfectly. They generally cheap out on one or two teachers(if you're unlucky three of them will be bad). It's the truth.
For chemistry - VBR Chemistry or LEO Academy
For physics - JMR Physics
I don't know about mathematics you can find it too.
These are my suggestion. At the end of the day choice is yours