As of 2015, the top McGraw-Hill textbooks are "Principles of Corporate Finance, 10th Edition," "College Writing Skills with Readings, 9th Edition," and "Inquiry To Life, 13th Edition." Overall, the top 100 McGraw-Hill textbooks purchased reside in the business, finance and science categories.
Most textbooks in the top 20 purchased are anatomy, physiology, and biology books for medical school students. The top-selling professional McGraw-Hill textbooks are medicine and diagnosis-related. On Amazon.com, some of the best-sellers of the McGraw-Hill collection are "First Aid for the USMLE Step 1" and "Math Grade 6." Most textbooks with a rating of five stars are those of the "McGraw-Hill's 500 Questions" collection. These books are study guides to help students prepare more efficiently for a variety of different exams such as the ACT, CPA and MCAT. McGraw-Hill also offers a collection of books called "McGraw-Hill's Top 50 Skills for a Top Score." This collection competes in popularity with the "500 Questions" collection. Unlike the "500 Questions" study guides, the "McGraw-Hill's Top 50 Skills for a Top Score" collection includes helpful tools for not only the ACT but also the SAT, ASVAB, and GED exams. The major consideration when choosing between these study guides is the "McGraw-Hill's 500 Questions" collection is geared toward college students, while the "50 Skills" collection helps high school students graduate.