hello hasrshika,

please do provide me some moe information as i did not not get your querry properly, please reask you querry with some more quality information so that i can help you out. so all the very best have a great future ahead.

The best and famous  coaching centers for preparation of jee mains+advance are akash, resonance, fiitjee, gravity etc. Mostly the batches in these coachings have more than 50 students where as some on the coaching have separate batches for students according to their performance, I was in resonance hazaratganj branch and the 1st branch have 20-30 students only but our branch consists of around 50 students. Else you can directly talk to the coaching centers and ask them about the number of students per batch holds.

Hope it helps.

Thank you.