What Ranius is · Research · For investors · Partners & roles · The deck · Contact · 日本語
RANIUS PROJECT
Education infrastructure
that stands alongside schools.
Ending the teacher shortage. Good teaching for every child.
Teacher training in about two months (planned), with no licence required. The trial starts in the US in December 2026.
44 million
teachers short worldwide by 2030
Profitable
every month, with no outside equity (NIJIN Inc.)
460 enrolled
children in our own online school
WHAT RANIUS IS
Ranius is education infrastructure that works alongside schools.
It is teacher training with AI in the loop; a new staffroom where teachers worldwide learn together; and, for children, a career path beyond the diploma. All three run on one mechanism.
Teacher training with AI in the loop
The four-year route to a licence becomes about two months: apply → train → coach → certify. AI reviews each lesson second by second and shows the teacher exactly what to fix. No licence required. You can begin whenever you are ready, and if you stop partway, you lose little.
A new staffroom for teachers worldwide
Traditionally, teachers have learnt behind closed classroom doors. On Ranius, every lesson is open to view. Watch good teaching any time, from anywhere. Learn every week with a team of four to eight teachers from around the world. Get a fair assessment based on timestamped evidence and what the children say, measured only against your own past lessons. We never rank teachers.
A career path for children, beyond the diploma
Children learn from teachers they would never otherwise meet. And, no longer confined to their own classroom or local school system, they can themselves teach children anywhere in the world. It is a path judged on whether you can actually teach someone, not on diplomas or exam scores, and it is open from childhood.
Ranius = Ran (Japanese for ‘orchid’) + Genius. Everyone has a talent that has yet to bloom.
THE PROBLEM
What we are tackling: the teacher shortage and the learning gap.
First, the scale of the problem.
Behind the numbers: four people.
Children out of school, or not learning to read and write
Age 11. Enrolled, but some weeks no teacher turns up.
Today Reading stays behind, year after year.
With Ranius Lessons for a few hours a week with a teacher from anywhere in the world.
People who hold a licence but do not teach
Age 32. Licensed, but works in an office.
Today The only realistic way back is a full-time school post.
With Ranius Teach online once a week while keeping the day job.
People with no licence who want to teach
Age 28. Lives abroad and has never taught.
Today The only way in is a four-year licence route.
With Ranius Apply, train, coach, certify — about two months.
Teachers already inside a school
Ten years in the classroom, with no time to watch colleagues teach.
Today No way to tell whether their teaching is improving.
With Ranius You get timestamped evidence and feedback from your pupils.
The four people above are illustrative composites, not real individuals.
STRATEGY
We start with an online Japanese-language school.
No one can take on the global teacher shortage in one go. So we are first testing whether the process works where it is easiest to verify.
STEP 1 Now
Open an online Japanese-language school in the US for Japanese children living abroad
Demand is clear and outcomes are measurable. It opens as a head-to-head trial: classes taught by people without a licence, trained through the Ranius process, alongside classes taught by licensed teachers.
Opening planned for December 2026. It measures whether they teach as well, and the cost of training each teacher.
STEP 2 Next
If they teach as well, recruit more teachers without a licence
Spouses of expatriate workers and others who want to teach but hold no licence. Apply, train, coach, certify: about two months (planned) to leading a class.
This is where we test whether quality holds as numbers grow.
STEP 3 After that
Extend the proven process beyond Japanese
Test whether the same process holds up in other subjects and languages, then open it up to others as education infrastructure.
Not yet started.
On the strength of this plan, our parent company, NIJIN Inc., was accepted onto the AI course of GSAP, the overseas expansion programme run by JETRO and Japan’s Cabinet Office. The programme’s accelerator partner is StartX, which was founded at Stanford. Read the release →
Only the start date of Step 1 is fixed. Steps 2 and 3 will be reshaped by what each earlier stage shows.
Build it with us
We are looking for people to help us change education.
No single company can solve this. There are three ways in, depending on who you are.
For universities and researchers
Research
No one yet knows the right way to sharpen a teacher’s ability to read a child, or to measure children’s non-cognitive skills properly. We want to find out with you.
- Study design (a non-inferiority trial)
- Rubrics and inter-rater agreement
- Methods for seeing, shadowing and practice
For investors
Traction and next steps
Built on a business that is profitable every month and has never taken outside equity. Next: an online Japanese-language school opening in the US in December 2026, run as an A/B trial.
- 460 enrolled · 1,200+ teachers trained
- About 1,000 lesson recordings, all made with consent
- The market, and how we grow into it
Partner or join
Partners & roles
Partnerships with schools, local governments, universities and companies, plus colleagues in engineering, measurement and business. Full time, or a few hours a week pro bono.
- Schools, local governments, universities and companies
- The Ranius community (by approval)
- Four open roles
Each starts with a message. If it is not a fit, just say so when we talk.
Every child has the power to be happy — and to make others happy.
A promise of good teaching for every child.
World peace through education.
Come and build it with us.
NIJIN Inc. · Tatsuro Hoshino
What Ranius is · Research · For investors · Partners & roles · The deck · Contact · 日本語 · NIJIN Inc.