Our story
Built by a teacher who
wanted to be closer
to her students.
Lesson Studio wasn’t designed in a boardroom. It was designed by Noa Nishimura, an online Japanese teacher, for the job she was already doing every night after class.
The gap
The lesson was never
the problem.
Noa had been teaching Japanese online for years, and the hour itself was good — real conversation, real corrections, real progress.
It was everything around the hour that kept slipping. A student would finally land a grammar point on a Tuesday, and by Friday there was no way to show them it had happened. Someone would ask “am I actually getting better?” and the honest answer was a feeling, not a number.
The notes lived in her head, or in a document nobody opened twice. She wasn’t missing a way to teach. She was missing everything that happens between lessons.
What she built
So she started
building it herself.
First as notes written by hand after every lesson. Then a spreadsheet. Then a system — a portal where each student could open their own vocabulary, their own progress, and a recap of the lesson they had just finished, written in their own language.
It took the hour of paperwork that came after the hour of teaching, and gave it back.
“I feel closer to my students now — and honestly, I feel like a better teacher.”
What changed
It changed the
relationship, not just
the admin.
Students started opening their portals between lessons. They could watch the words add up. They could hear themselves from three months ago and notice, without being told, how far they had come.
And Noa — who had quietly been dreading the evening writeups — found she actually wanted to open the thing. It turned the part of the job she liked least into the part she looks forward to.
Along the way, more than a hundred thousand people started following her teaching.
KOKU Labs
One teacher’s workaround,
open to every teacher.
KOKU Labs is a small studio building the tools we wished existed when we were the ones teaching. Lesson Studio is the first — now in English, French and Japanese, for anyone who recognises the gap Noa was trying to close.
3 free recaps, no card needed.