Hanamaru Gakushukai Ranked No. 1 Overall in the 2026 GMO Customer Satisfaction Ranking for Children's Learning Centers (Preschool/Elementary)

The cram school "Hanamaru Gakushukai" (Koyu Co., Ltd.; Headquarters: Saitama City, Saitama Prefecture; Representative: Masanobu Takahama) has been awarded 1st place overall in the "2026 GMO Customer Satisfaction Ranking" for children's learning centers (preschool/elementary) as announced by GMO Research & AI, Inc. (Headquarters: Shibuya-ku, Tokyo).

[2026 GMO Customer Satisfaction Ranking: Children's Learning Centers (Preschool/Elementary) Ranking] https://r-portal.gmo-research.ai/ranking/details/kids-study_2026/

The "GMO Customer Satisfaction Ranking" conducts surveys based on rigorous methodologies, targeting only those who have actual experience using specific services or products. It is published as a highly reliable ranking that visualizes corporate brand value, with the goal of providing reliable and objective evaluation indicators in an era of information overload.

[About the cram school "Hanamaru Gakushukai"] https://www.hanamarugroup.jp/hanamaru/

Started in 1993, the Hanamaru Group has developed the cram school "Hanamaru Gakushukai," which is built on the three pillars of "thinking ability," "language skills," and "outdoor experience," as well as the preparatory school division "School FC."

In particular, "Hanamaru Gakushukai" is a cram school aimed at raising children into "adults who can make a living and are attractive individuals" by fostering three core strengths: "the ability to see through to the essence," "the ability to see things through to completion," and "the ability to attract others." With over 375 classrooms across 198 locations in major areas nationwide, centered in the Kanto region, the school enhances children's academic ability and life skills through weekly classes and seasonal outdoor experiences for preschool and elementary students.

Furthermore, since its founding, the school has actively engaged in dialogues with parents and held lectures to address the issue of "isolated parenting"—a problem exacerbated by the rise of nuclear families—earning high support from many households.

- List of classrooms: https://www.hanamarugroup.jp/hanamaru/class/ - Information on free trial classes: https://www.hanamarugroup.jp/hanamaru/taiken/

[Koyu Co., Ltd. Company Overview & Business List] We have been operating cram schools for over 30 years since 1993, focusing on the operation of "Hanamaru Gakushukai," which fosters thinking skills, non-cognitive abilities, and sensitivity, and "School FC," which aims to foster "happy entrance exam preparation" and "children who can study independently." Currently, the group operates approximately 450 classrooms, mainly in the Tokyo metropolitan area. In 2024, Cass Capital Co., Ltd. became a shareholder, and we are strengthening our management to aim for further nationwide expansion.

◆ Company Overview Company Name: Koyu Co., Ltd. (Hanamaru Group) Representative: Masanobu Takahama Address: 9-19-10 Tokiwa, Urawa-ku, Saitama City, Saitama Prefecture Establishment Date: February 2, 1993 Business Description: Operation of cram schools "Hanamaru Gakushukai" and "School FC," etc. Official Website: https://www.hanamarugroup.jp/

◆ Related Businesses - Cram school "Hanamaru Gakushukai" A cram school aimed at raising children into "adults who can make a living and are attractive individuals" by fostering three core strengths: "the ability to see through to the essence," "the ability to see things through to completion," and "the ability to attract others." For preschool and elementary students, we enhance their academic ability and life skills through weekly classes and seasonal outdoor experiences. URL: https://www.hanamarugroup.jp/hanamaru/

- Outdoor Experience | Summer School, Snow Country School, Parent-Child Projects, etc. Outdoor experiences for Hanamaru Group members, with 10,000 participants annually. Through overnight stays away from parents, genuine play in nature, and group life with children they meet for the first time, children experience a "mini-society." URL: https://hanamaruyagai.jp/

- School FC | A preparatory school that realizes "Happy Entrance Exam Preparation" As the Hanamaru Group's preparatory school, School FC provides guidance for junior high and high school entrance exams in the Tokyo metropolitan area. Entrance exams are not the goal, but an important milestone leading to further growth. At School FC, we value fostering the power of "self-study"—learning voluntarily rather than being forced to study. We want children not only to achieve their dreams but also to enjoy the fun of learning and the confidence gained through effort—that is what we consider "happy entrance exam preparation." Believing in children's potential and providing guidance that stays close to each individual is the strength of School FC. URL: https://www.schoolfc.jp

- School FC Sigma TECH Course | Hybrid online and in-person, No. 1 track record for exam success within School FC A junior high school entrance exam cram school where students can eat dinner at home with their families. Through two days of in-person classes per week and individual tutoring, we aim for success in entrance exams while valuing family time and diverse experiences for children. This new learning style of "eating dinner slowly at home and passing exams" is a proposal unique to the Hanamaru Group, balancing exam study with a rich elementary school life. URL: https://sigmatech.schoolfc.jp/

- Free School Business | "Hanamaru Elementary School" Hanamaru Elementary School is a free school for children who have chosen not to attend regular school. Many students with sharp talents, such as national champions in wrestling or shogi, or experts in ancient characters from hundreds of years ago, are enrolled or have graduated. While valuing basic academic and physical strength, our goal is to raise children who can think and act on their own. Children will always change and grow depending on their environment. For that growth, we think together with the children, act together with them, and walk alongside them. URL: https://hanamaru-eschool.jp/

* Download the PDF press release here d12991-79-0c892a5426f5c1d38e3cdd7964fc1f63.pdf