||Kenji Yamazaki, the first president, establishes Kirihara Shoten Limited. Its business publishing focuses on English educational materials for high schools and universities.
||Kirihara Shoten publishes its first workbooks containing questions which frequently appear on university entrance exams. The books Sokusen Zemi, Daigaku Nyushi Eigo Hinshutsu Mondai Souenshu become best sellers and lead to the success of many trendsetting products.
||All Kirihara Shoten textbooks pass the government screening of English textbooks for high schools for the first tme.
||All Kirihara Shoten textbooks pass the government screening of Japanese textbooks for high schools once again, establishing Kirihara Shoten as a major textbook publisher in Japan.
||Sogo Eigo Forest (grammar book for comprehensive English) is published and becomes a bestseller after gaining overwhelming support in high schools.
||The company becomes a subsidiary of Pearson plc., Pearson Kirihara K.K.
||Longman English Japanese Dictionary is published.
||Pearson Education Japan merges with Kirihara Shoten. Company name is changed to Pearson Kirihara K.K.
||Pearson transfers ownership to Senior Managers through an MBO and the company is reestablished as Kirihara Shoten K.K.
||Releases Forest of Kirihara, Free student app.