This is a memory book for efficiently studying English, math, science, social studies, and Japanese for 3rd-year junior high school students. - Title: 5-Minute Before Bed Ear Memory Book for Junior High 3rd Grade High School Entrance Exams - Publisher: Gakken - Target Grade Level: 3rd-year junior high school - Subjects: English / Math / Science / Social Studies / Japanese I've read it a few times, but there are no noticeable stains. Please refrain from purchasing if you are sensitive to used items, as it is stored by a private individual. Thank you for looking.