CliffsNotes has become synonymous with study guides, offering concise summaries and analyses of literary works. Founded in 1958 by Clifton Hillegass, CliffsNotes has grown from a small basement operation to a major player in the educational resource industry. This article explores the history and development of CliffsNotes, highlighting key milestones and changes over the years.
Origins of CliffsNotes
CliffsNotes was started by Clifton Hillegass, a Nebraska native, who was inspired
by Canadian study guides called Coles Notes. Hillegass acquired the U.S. rights to these guides and began his own venture in Lincoln, Nebraska. With the help of his wife, Catherine, Hillegass launched CliffsNotes from their basement, initially offering sixteen William Shakespeare titles. The first batch of notes was shipped in August 1958, and by the end of the year, over 58,000 copies had been sold.
Hillegass hired literature teachers to condense works of literature into concise summaries, commentaries, author biographies, and character analyses. This approach allowed students to gain a deeper understanding of literary works without having to read the entire text. As the business grew, Hillegass eliminated the Cole's Notes versions, focusing on his own writers' revisions of Shakespearian plays.
Expansion and Acquisitions
CliffsNotes continued to expand throughout the 20th century, becoming a staple in the study guide industry. In 1998, IDG Books purchased CliffsNotes for $14.2 million, marking a significant milestone in the company's growth. Three years later, John Wiley & Sons acquired IDG Books, which had been renamed Hungry Minds.
In 2011, CliffsNotes announced a joint venture with TV producer Mark Burnett to create a series of 60-second video study guides of literary works. This innovative approach aimed to engage students through multimedia content, making learning more interactive and accessible. In 2012, CliffsNotes was acquired by Houghton Mifflin Harcourt, further solidifying its position in the educational resource market.
CliffsNotes Today
In 2021, CliffsNotes was acquired by Course Hero, a platform that provides study resources to students worldwide. This acquisition reflects the ongoing evolution of CliffsNotes as it adapts to the digital age. Despite detractors who claim that CliffsNotes allows students to bypass reading assigned literature, the company maintains that its guides promote the reading of original works.
Today, CliffsNotes continues to offer valuable study guides in both pamphlet form and online, helping students navigate complex literary and academic subjects. As the educational landscape evolves, CliffsNotes remains committed to providing resources that support student learning and comprehension.









