Reuters: McGraw-Hill Education is said to be planning an initial public offering as early as the fourth quarter of this year, potentially valuing the textbook company at around $5 billion. The company’s owner, private-equity firm Apollo Global Management, reportedly has held talks with investment banks about the IPO. The New York-based McGraw-Hill Education is one of the largest educational publishers in the world, selling textbooks for school and university students and professionals in about 60 languages.