The Notgrass Exploring World History Curriculum Set is a comprehensive textbook series authored by Charlene, John, and Ray Notgrass. Published by Notgrass Company in 2014, this set includes a student review book and a quiz/exam book, making it a valuable resource for high school students studying world history. The curriculum is illustrated and presented in paperback format, catering to intermediate-level learners in the United States. With its in-depth exploration of world history, this curriculum set is a must-have for students looking to deepen their understanding of the subject.