https://revolutionclasses.com/ 2026-09-27 weekly 1.0 https://revolutionclasses.com/assets/og-image.png Revolution Classes - Coaching Institute and Library in Chak-Bairiya, Patna, Bihar https://revolutionclasses.com/assets/hero-samrat-kohli.png Samrat Kohli, Director of Revolution Classes, Patna https://revolutionclasses.com/assets/gallery/gallery-9.jpg Revolution Classes and Library building, Chak-Bairiya, Patna https://revolutionclasses.com/assets/gallery/gallery-11.jpg Revolution Library reading room, Chak-Bairiya, Patna