공백위키 is an open learning encyclopedia for elementary, middle, and high school students, organizing concepts across Korean, mathematics, English, social studies, ethics, and science according to Korea’s 2022 revised curriculum. It draws on textbooks and trusted resources such as EBS, presenting material in accessible, orderly language. Its aim is to help learners fill gaps in understanding—not just memorize definitions—by explaining why concepts matter and how they are used.

Articles identify the relevant grade and subject, build explanations from basic to advanced, and commonly include examples, comparisons with easily confused ideas, frequent mistakes, practice questions with worked solutions, and summaries. Students can use the site to learn a topic from the ground up, review key points before an exam, work through problems, or find related concepts to study next. The encyclopedia also features learning guides and resources on study methods, past and mock exams, and admissions information. Its content spans school subjects and grade levels, with contributions welcomed from readers who want to improve and expand the shared resource.