【公式アカウント】光文書院

Kobunshoin is an education publisher serving elementary schools and their students. It develops and publishes learning materials across subjects including Japanese, mathematics, science, social studies, and home economics. Its print resources include subject tests, repeat-practice kanji and calculation drills, textbooks, supplementary books, and other workbooks. The company also produces teaching aids, including its Sansuu Set mathematics learning materials, to support classroom instruction.

Kobunshoin’s education technology offerings include digital learning materials and services, as well as software for school administration. Drill Planet is a digital practice platform designed to help children learn enjoyably and stay motivated. CBT Tower lets teachers assess understanding by small learning unit and supports test distribution and result aggregation. Other services include digital subject materials and Himawari Sensei, a school-support service. Kobunshoin also provides related videos, downloadable resources, free printables, catalogs, and information for teachers and families. Through its range of print, classroom, and digital products, the company supports teaching and learning in elementary education.