https://www.scconline.com/blog/post/2022/08/29/karnataka-textbook-society-goods-and-services-tax-karnataka-government-karnataka-societies-act-1960-government-authority-educational-institution-legal-research-legal-news/
Authority for Advance Ruling (Karnataka) |Karnataka Textbook Society is neither classified as a "State Government" nor an "Educational Institution"