Some teacher-student relationships which are neccessary:
Mohanlal teaching Amitabh on acting
Shakeela teaching Rani on acting
Adoor/MT/Aravindan teaching Bhansali/Gowarikar/Kapoor/Gadhvi et al on directing
AR Rehman teaching Shantanu Moitra/Kirkiree on lyrics
MS Subbalakshmi/Shankar Mahadevan/KK/Shaan teaching Babul Supriyo/Kumar Sanu/Shreya Ghosal/Lata Mangeshkar on singing.
Some other thoughts for teaching:
Hyderabad teaching Patna how to manage infrastructure, build world-class colleges like ISB.
Bangalore teaching Lucknow how to create IT and how to build good roads and first-class public transport system, garden city, colleges and good work culture.
Chennai teaching Delhi about safety of women, safety of people in general, respecting women, providing welcoming, warm welcome to outsiders-unlike Delhi, where they are very unfriendly towards outsiders and non-North Indians in general.
