CNTextbookToC: Chinese Textbook Table of Contents Dataset for Educational Resource Organization

This dataset comprises more than 1,500 Chinese textbooks for primary and secondary education, collected from national publishers. It provides a focused collection for evaluating educational resource organization at the K-12 level. The dataset includes two label types: publisher (L1) and subject (L2, e.g., \Mathematics\, \History\). All content is in Chinese, except for English language textbooks. The table of contents (ToC) data is standardized into a unified three-layer JSON format, enabling research in hierarchical topic modeling and educational resource categorization.