Narayana IIT academy is not so good coaching institute. Faculties are changing very frequently and every teacher have different style of teaching so it will difficult for students to cope up with every teaching style because he is already in pressure of IIT preparation . Hostel facilities are also not good , foods on hostel are not bare able .if student will not get good food then his mind tension will increase which is extra tension you can say .So before getting admission please enquire every coaching institute then take admission.