In 1989, McGraw-Hill formed a joint partnership with Robert Maxwell, forming America's second largest textbook publisher.

In 1988, Harold McGraw became chairman emeritus of the company. The buyout made McGraw-Hill the largest educational publisher in the U.S. In 1986, McGraw-Hill bought out competitor The Economy Company, then the nation's largest publisher of educational material. In 1979, McGraw-Hill Publishing Company purchased Byte from its owner/publisher Virginia Williamson, who then became a vice-president of McGraw-Hill. McGraw-Hill combined its films in the CRM division in 1978. It acquired Contemporary Films in 1972 and CRM in 1975. In 1946, McGraw-Hill founded an international division of the company. The remaining parts of each business were merged into The McGraw-Hill Publishing Company, Inc in 1917.

John Hill served as president, with James McGraw as vice-president. In 1909, the two co-founders formed an alliance and combined the book departments of their publishing companies into an incorporated company called The McGraw-Hill Book Company. Hill, had also produced several technical and trade publications and in 1902 formed his own business, The Hill Publishing Company. He continued to add further publications, eventually establishing The McGraw Publishing Company in 1899. McGraw, co-founder of the company, purchased the American Journal of Railway Appliances.

McGraw Hill was founded in 1888 when James H. McGraw-Hill logo used from the mid-1960s to the late 1990s McGraw Hill was sold in 2021 to Platinum Equity for $4.5 billion. Formerly a division of The McGraw Hill Companies (later renamed McGraw Hill Financial, now S&P Global), McGraw Hill Education was divested and acquired by Apollo Global Management in March 2013 for $2.4 billion in cash. McGraw Hill operates in 28 countries, has about 4,000 employees globally, and offers products and services to about 140 countries in about 60 languages. The company also publishes reference and trade publications for the medical, business, and engineering professions. McGraw Hill is an American educational publishing company and one of the 'big three' educational publishers that publishes educational content, software, and services for pre-K through postgraduate education. Adaptive learning technology, educational software, e-books, apps, platform services, curriculum, and books

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