As of 2015, SparkNotes provides summaries of dozens of books online that can be accessed for free. The summarized books are ones that are frequently assigned in middle and high school literature classes.
SparkNotes book summaries are issued as part of the company's literature study guides. These guides are designed to help students who are struggling with school work or class assignments. In addition to full summaries, SparkNotes study guides also include detailed chapter or section summaries, character analyses, discussions of major themes and sample essay questions. SparkNotes summaries are designed to be used as supplements to the novels they cover rather than replacements for them.