Ichishin Holdings Co., Ltd.
Corporate brand
UnclaimedJapanese holding company for the Ichishin Group, operating the Ichishin Gakuin and Ichishin Preparatory School cram-school networks in the Greater Tokyo region.
Last updated September 26, 2026
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Overview
Ichishin Holdings Co., Ltd. is a Japanese holding company that oversees the Ichishin Group, a private education business best known for its cram schools (juku) and preparatory schools under the names Ichishin Gakuin and Ichishin Preparatory School. The group traces its origins to 1965, when Takeo Umeda founded the individually operated Mamma Shingakkai; the business was renamed Ichikawa Shingaku Kyoshitsu in 1970 and incorporated in 1975. A separate company, Ichishin Education Center, was established in 1979 to open Ichishin Preparatory School, and in 1981 it absorbed Ichikawa Shingaku Kyoshitsu. The company changed its name to Ichishin in 1984 and renamed Ichikawa Shingaku Kyoshitsu as Ichishin Gakuin. The company listed its shares over the counter in 1996, the market that later became the Tokyo Stock Exchange Standard Market, where it trades under securities code 4645. In 2010 it moved to a holding-company structure through an absorption-type company split, with the former Ichishin becoming Ichishin Holdings and a subsidiary becoming the new Ichishin. The group has expanded into related education services, including individualized instruction through Kokugakusha, and into nursing-care and welfare services, while also operating corporate functions such as textbook printing and distribution through its subsidiary Yushin (later absorbed in 2014). Ichishin Holdings has been tied to Gakken Holdings since a capital and business alliance in 2011. Gakken increased its stake in stages—to 18.43% in 2014, 31.47% in 2017, and 37.66% in 2019—and in July 2023, with five of nine directors concurrently serving at Gakken group companies, Ichishin Holdings became a consolidated subsidiary of Gakken Holdings. The group's schools serve students across Tokyo, Kanagawa, Chiba, Saitama, Ibaraki, Shizuoka, and Nagano. Its stated mission is to provide lifelong learning opportunities and contribute to a society full of smiles. As of the company profile dated May 28, 2026, Ichishin Holdings is headquartered in Ichikawa, Chiba, with a Tokyo office in Bunkyo, and reported 924 employees plus 3,355 temporary employees on a consolidated basis as of February 28, 2026.
History
The Ichishin group began in May 1965 when Takeo Umeda founded the individually operated Mamma Shingakkai. In December 1970 the school relocated and was renamed Ichikawa Shingaku Kyoshitsu. In June 1975 the business was incorporated as Ichikawa Shingaku Kyoshitsu Co., Ltd. In February 1979, Ichishin Education Center Co., Ltd. was established and opened Ichishin Preparatory School. In November 1981, Ichishin Education Center absorbed Ichikawa Shingaku Kyoshitsu. In October 1984 the company changed its name to Ichishin Co., Ltd., and Ichikawa Shingaku Kyoshitsu was renamed Ichishin Gakuin. In March 1986 the group established Yushin Co., Ltd., a subsidiary for printing and distributing educational materials. In July 1996 the company listed its shares over the counter, the market that later became the Tokyo Stock Exchange Standard Market. In May 1999 it established Kokugakusha Co., Ltd., a subsidiary for individualized instruction. On April 16, 2009, in preparation for a holding-company structure, the company established three subsidiaries: Ichishin Preparation Company, Ichishin Wingnet (now Wingnet), and Ichishin Research Institute. On March 1, 2010, it carried out an absorption-type company split, transferring operations to the three subsidiaries and moving to a holding-company system. The former Ichishin Co., Ltd. was renamed Ichishin Holdings Co., Ltd., and the subsidiary Ichishin Preparation Company was renamed the new Ichishin Co., Ltd. In November 2011, Ichishin Holdings entered into a capital and business alliance with Gakken Holdings Co., Ltd. In May 2014 it announced a strengthening of that alliance; in June, Gakken Holdings subscribed to a third-party allotment of new shares and a disposal of treasury shares, raising its stake to 18.43%. In November 2014, Ichishin Holdings absorbed Yushin Co., Ltd. In May 2017, Gakken Holdings acquired additional shares, bringing its ownership ratio (on a voting-rights basis) to 31.47%. In August 2019, Ichishin Holdings carried out a disposal of treasury shares to Gakken Holdings, raising Gakken's ownership ratio (on a voting-rights basis) to 37.66%. In July 2023, with five of nine directors concurrently serving at Gakken Holdings group companies, Ichishin Holdings became a consolidated subsidiary of Gakken Holdings. In September 2018, Ichishin Holdings and Gakken Holdings launched the Education Alliance Network, a joint participation organization for private educational institutions such as cram schools and preparatory schools. As of October 2018, in addition to the two companies, three other companies had joined: Shingakukai, Wizas, and the K-Cin Group (Keishinkan and Meishujuku). The group's subsidiaries include Ichishin Co., Ltd. (100.0%), known for Ichishin Gakuin and Ichishin Preparatory School, and Ibaraki-shin Holdings Co., Ltd. (100.0%), an intermediate holding company managing the Ibaraki-shin Group. The group also operates nursing-care and welfare services and corporate functions. Its schools serve Tokyo, Kanagawa, Chiba, Saitama, Ibaraki, Shizuoka, and Nagano. As of the company profile dated May 28, 2026, Ichishin Holdings is headquartered in Ichikawa, Chiba, with a Tokyo office in Bunkyo, and reported 924 employees plus 3,355 temporary employees on a consolidated basis as of February 28, 2026.
- 2023
Became a consolidated subsidiary of Gakken Holdings.
- 2019
Gakken Holdings' voting-rights ownership ratio reached 37.66%.
- 2018
Launched the Education Alliance Network with Gakken Holdings.
- 2017
Gakken Holdings raised its voting-rights ownership ratio to 31.47%.
- 2014
Gakken Holdings raised its stake to 18.43% through third-party allotment and treasury share disposal.
- 2014
Absorbed Yushin Co., Ltd.
- 2011
Entered a capital and business alliance with Gakken Holdings.
- 2010
Moved to a holding-company structure via absorption-type company split; renamed Ichishin Holdings.
- 2009
Established three subsidiaries in preparation for a holding-company structure.
- 1999
Established Kokugakusha Co., Ltd. for individualized instruction.
Products and positioning
A holding company for a Greater Tokyo private-education group, offering lifelong learning from cram schools and preparatory schools to individualized instruction and welfare services, now part of the Gakken Holdings group.
Ichishin Gakuin
Cram school (juku) network operated by Ichishin Co., Ltd.
Ichishin Preparatory School
Preparatory school (yobiko) operated by Ichishin Co., Ltd.
Kokugakusha
Individualized instruction subsidiary established in 1999.
Wingnet
Subsidiary established in 2009 (formerly Ichishin Wingnet).
Ibaraki-shin Holdings
Intermediate holding company managing the Ibaraki-shin Group.
Sources5 sources
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