I agree that the person handling the three subjects Maths, Physics and Chemistry is quite knowledgeable though I have never met him. My daughter is an online student of Meena Coaching Centre for National Talent Search Examination (NTSE) course. She receives question papers periodically through email. She sends the answers through mobile phone and gets her marks alongwith the correct answers within five seconds. I paid an yearly fee of Rs.10000 and it is quite worth it. He clarifies all my daughter's doubts and my daughter has considerably improved her knowledge. She is confidant of posting a success not only in NTSE but also in IIT.