From "Can I Really Get a High School Diploma?" to "An Option to Learn My Way": Correspondence High Schools

Clisk Inc. (Headquarters: Shinjuku-ku, Tokyo; Representative Director: Hiroshi Chitose; hereinafter referred to as "Clisk"), which operates a self-operated web media business, has launched a "20th Anniversary Special Feature Page" on its official website starting July 1, 2026 (Wed.) to commemorate the company's 20th anniversary and the 20th anniversary of "Tsushinsei Koko Navi," the correspondence high school portal site it operates.

"Tsushinsei Koko Navi" has been used by over 170,000 users in total and lists information on over 200 correspondence high schools and support schools nationwide. This special feature page will look back at the 20 years of changes surrounding correspondence high schools through timelines and data, along with the history of "Tsushinsei Koko Navi," and will communicate the diversification of learning and the future of correspondence high schools through interviews with experts.

Additionally, a 20th-anniversary related campaign to support career choices is planned for this summer. Details will be announced on "Tsushinsei Koko Navi" as soon as they are decided.

Clisk x Tsushinsei Koko Navi 20th Anniversary Special Site

Special Feature Page URL: https://clisk.co.jp/20th

From "Can I Really Get a High School Diploma?" to "An Option to Learn My Way": 20 Years of Change Surrounding Correspondence High Schools

Correspondence high schools are gaining attention not only for their role in supporting students with experience of school refusal but also as diverse learning options that cater to the individual circumstances and aspirations of each student.

Twenty years ago, when "Tsushinsei Koko Navi" was first launched, parents and students sometimes expressed anxieties and doubts about the system itself, such as "Is a correspondence high school really a high school?" and "Can I obtain a high school diploma if I graduate?"

Today, awareness of correspondence high schools has spread, and the perspective on choosing a school has also changed. Students and parents are increasingly considering correspondence high schools for positive reasons, such as "I want to learn at my own pace," "I want to balance school life with specialized activities," and "I want to experience high school life in an in-person course," while comparing learning styles, attendance frequency, support systems, how to spend school life, and post-graduation paths.

Amidst these changes, the importance of providing information to help students and parents make informed decisions about their future paths, by correctly understanding the characteristics of each school, has become more critical than ever. Through the operation of "Tsushinsei Koko Navi," Clisk has been engaged in disseminating information that connects students and parents with correspondence high schools and support schools nationwide for the past 20 years.

Main Contents of the "20th Anniversary Special Feature Page"

The 20th Anniversary Special Feature Page introduces the current status and future of correspondence high schools through the history of "Tsushinsei Koko Navi," the changes in the correspondence high school industry over the past 20 years, voices from school sites, and the perspectives of experts.

1. "20 Years of Correspondence High Schools and Clisk" Seen Through Numbers and a Timeline

Along with the history of "Tsushinsei Koko Navi," which has served over 170,000 users and lists over 200 schools, we will look back at the social changes surrounding correspondence high schools and the evolution of the educational environment through timelines and data.

2. Experts Discuss "The Future of Correspondence High Schools and Education"

Interviews with Mr. Teshima and Mr. Toki, experts with knowledge in the field of education, will be published. They will share their perspectives on the current state of support for school refusal, the social role played by correspondence high schools, and the diversity of learning required in the coming era.

3. Comments from Correspondence High Schools and Support Schools

We will receive comments from school officials at correspondence high schools and support schools regarding the changes in correspondence high schools and their thoughts on future education. Through voices from school sites, we will introduce the roles that correspondence high schools play and their initiatives to engage with each student.

[Announcement] 20th Anniversary Related Campaign Planned on Tsushinsei Koko Navi This Summer

Around the summer vacation, more students and parents begin to reflect on their first semester of school life and consider their future paths and transfers or re-enrollments for the second semester onwards.

"Tsushinsei Koko Navi" plans to hold a 20th-anniversary related campaign for students and parents considering their future paths this summer. Details will be announced on "Tsushinsei Koko Navi" as soon as they are decided.

Clisk aims not just for the 20th anniversary to be a mere milestone, but for it to be an opportunity for students and parents to proactively consider the path that best suits them.

Representative's Comment

Clisk Inc. Representative Director, Hiroshi Chitose

"Through the operation of "Tsushinsei Koko Navi," Clisk Inc. has been engaged in providing information that connects students and parents considering correspondence high schools with schools for 20 years.

In these 20 years, the environment surrounding correspondence high schools has changed significantly. In addition to their important role in supporting students with experience of school refusal, correspondence high schools are now attracting growing interest as diverse learning options that cater to the individual circumstances and aspirations of each student.

On the other hand, the characteristics and support systems of each school are diverse, and accurate and easy-to-understand information is essential for students and parents to choose a school that suits them.

We will continue to strive to create an information environment where students and parents can make informed decisions about their future paths by accurately conveying the individuality and educational policies of correspondence high schools and support schools."

About Tsushinsei Koko Navi

"Tsushinsei Koko Navi" is a portal site for correspondence high schools aimed at students and parents considering enrollment or transfer to correspondence high schools and support schools.

It provides information on correspondence high schools and support schools nationwide, along with school comparisons, brochure requests, and content useful for career choices. It clearly organizes school characteristics, learning styles, and support systems to help students and parents consider schools that are right for them.

About Clisk Inc.

Clisk Inc. is a company that operates a self-operated web media business. Through the operation of the correspondence high school portal site "Tsushinsei Koko Navi," it provides school information and content useful for career choices to students and parents considering correspondence high schools and support schools, and engages in information dissemination that connects schools with students and parents.

Company Name: Clisk Inc. Location: Sumitomo Fudosan Shinjuku Oak Tower 27F, 6-8-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Representative: Representative Director, Hiroshi Chitose Established: December 2005 Business Activities: Self-operated web media business, Education-related media business Operated Site: Tsushinsei Koko Navi URL: https://clisk.co.jp/

Inquiries Regarding This Matter

Clisk Inc. Contact: Kitazawa, Matsuo Email: contact@clisk.co.jp TEL: 03-6456-2240 URL: https://clisk.co.jp/contact