Teachers should spend their time on students, not on building course material.
One shared library of study material for every textbook and subject, built once and kept fresh for every class. And a growth hub on top: what each student has mastered, what’s working for the class, and where each learner’s path leads.
The problem
Every teacher rebuilds the same worksheets, quizzes and tests on their own, for the same textbooks and the same standards. Those hours come out of evenings and out of time with students.
What we found
We reviewed the official assessment standards of 17 countries and provinces. They agree on what good assessment looks like: tasks tied to a published standard, results on a few described levels, practice kept separate from grading. Almost none of them supply the materials. That gap lands on teachers.
Read what the standards sayHow it works
Three steps, from a textbook to a class that’s ready.
Step 1: Find or add a shelf
Search by title, ISBN or topic. If your book isn’t here, upload it once, up to 2,000 pages. Your file stays private.
Browse shelvesStep 2: Everything is built once
A summary, a one-page cheat sheet, a full study guide and flashcards, written chapter by chapter from the book’s own pages and shared with every teacher who uses the same book.
See a shelfHow a big book gets builtStep 3: Fresh papers and a study plan
A new worksheet, quiz or test in one click, every time. Students get a Learn tab that adapts to what works for them, one chapter at a time.
Try the test generatorHow Learn adapts
How we use AI
AI does the reading and the first draft, so no teacher has to. Every score that counts (check-ins, mastery checks, the learning profile) and every check on the AI itself is plain code we can explain.
From a book to a shelf
- No AIPlain code: checks, maths and scheduling we can explain line by line.
- Fast modelClaude Haiku: quick, cheap judgements like naming chapters.
- Writing modelClaude Sonnet: reads every chapter and writes the material.
- Strongest modelClaude Opus: the two whole-book pieces, where judgement matters most.
- Step 1Size and safety checkPage count read in your browser before upload; malware scan; anything over 2,000 pages never leaves your computer.No AI
- Step 2ScreenSpam, ads and prompt injection are refused before any real work is spent on them.No AIFast model
- Step 3Find the chaptersBookmarks, contents and headings give candidates; a model gives each chapter its real name and sets aside the preface, index and answer keys.No AIFast model
- Step 4Read every chapterLong chapters are split at natural breaks and read in parallel. Out come the key concepts, each with the pages it’s taught on.Writing model
- Step 5Write the materialStudy guide from the concepts and the book’s own pages; flashcards from the concepts. Checked for copying and rewritten if needed.Writing modelFast model
- Step 6The whole bookSummary and cheat sheet from the most important ideas of every chapter.Strongest model
- Step 7Place it on the mapCompared with nearby books: what comes before, what comes after, what teaches the same thing.Fast model
What AI does
- Reads each chapter of a book and pulls out its key ideas, with page references
- Writes the summary, cheat sheet, study guide and flashcards in its own words
- Writes fresh questions for every worksheet, quiz, test and mastery check
- Gives feedback and asks guiding questions when a student explains an idea back or teaches it
- Suggests how books connect: what to learn first, next, or instead
What AI never does
- Scores a mastery check or a check-in: those are marked against an answer key
- Decides a student’s plan, pace or review schedule: that’s plain maths (FSRS and our check-in rules)
- Hands a student the answer while they practise
- Writes about the book itself, like its publisher or edition; only the subject
- Shows anyone the uploaded file
- Checked before it’s shownEvery piece is tested for copied passages and blocked language. A draft that fails is rewritten, up to twice, then held for a moderator.
- Grounded in the bookStudy guides are written from the chapter’s concepts and the book’s own pages, with page references you can check.Read more
- Asks, doesn’t answerPractice feedback names what’s missing without stating it. An answer-leak guard catches anything that slips through.Read more
- Sized to the jobSmall, fast models for small decisions; the strongest model only for the whole-book pieces. Builds run in batches at half the cost.
A map of what to learn next
Like a skill tree in a game, every book in the library links to its neighbours. Finish one and there’s a next step; get stuck and there’s another way in. The map builds itself as shelves are added, and teachers can set links by hand.
Learn first
Books that teach what this one assumes. When a chapter won’t click, Learn suggests brushing up on the groundwork.
Learn next
Books that build on this one. Master every chapter and Learn shows you where to go next.
Explained differently
Another book on the same material at the same level, for when one explanation isn’t working. Progress is kept.
How Learn works
One chapter at a time, round a loop that measures what sticks.
- Each day opens with a short check-in on ideas from days ago, the honest measure of what was remembered.
- Today’s plan mixes due reviews with new concepts, at a pace set by those check-ins.
- Practice uses whichever study methods are working for this student, from 20 tools in 7 method types.
- A mastery check of fresh questions opens the next chapter at 85%. Earlier chapters stay open for review.
Not just a library: a growth hub
The same data that adapts Learn shows students where they’re heading and shows teachers where to help, with nothing shared unless the student agrees.
- Learn
Master one chapter, then the next
Check-ins find which study methods work for each student; mastery checks at 85% open the next chapter.
Find a shelfRead more - Teach
See who needs a hand, and what's working
Each student's chapters, daily activity and latest check, plus which methods work across the class and which ideas most students miss.
Make a classRead more - Grow
Know where your learning leads
An expertise web built from what you've mastered, compared with any job or college major, with the shelves that close the gap.
Open My growthRead more
What we believe
Ten beliefs decide what we build, and what we leave out.
1A teacher’s time belongs to students.
Every hour spent writing worksheets or reformatting tests is an hour not spent with a student. Removing that work is the product.
2One good shared source beats a thousand private copies.
Shelves are public, duplicates are merged, and likes show which material other teachers trust.
3Every question traces to a standard.
Official systems everywhere require tasks to align with published standards, so every question should say which standard it checks. Read more
4Described levels beat raw scores.
Nearly every system reports on a handful of described levels. A teacher, parent and student should all understand what a result means. Read more
5Practice is for learning; tests are for checking.
Practice sets give hints and answers; tests give points and a time limit. The format makes the purpose clear. Read more
6Fresh questions, not recycled ones.
Students get new questions each time, so practice measures understanding, not memory of last week’s sheet. Read more
7Accessible by default.
Accessible formats are built in from the start, not added on request.
8Teachers stay in charge, and less is more.
AI drafts; teachers choose, swap and edit. Shorter, purposeful work beats more of it. Read more
9Measure what works for each learner; never label them.
We track what actually sticks for each student with each tool, start from the methods with the strongest evidence, and adjust slowly. Read more
10Learning is a path, not a pile.
Every book links to what to learn first, what to learn next, and other books that explain the same thing differently. Finishing one, or getting stuck, always has a next step. Read more
Built on how people actually learn
Every tool follows the research, not fashion. We don’t sort students into “learning styles”; we measure what sticks for each of them. The seven types of study methods, and the evidence for each
- Testing yourselfRetrieval beats rereadingStudents who tested themselves remembered more after two days and a week than students who reread.Roediger & Karpicke, 2006
- SpacingReviews spread over daysSpacing practice is one of only two techniques rated high utility in a major review of study methods.Cepeda et al., 2008; Dunlosky et al., 2013
- MasteryMaster one chapter, then the nextMoving on only after a unit is secure helps most, especially for students who are behind. Learn’s bar is 85%.Bloom, 1984; Kulik et al., 1990
- No labelsLearning styles don’t hold upA review found virtually no evidence that teaching to a preferred style improves learning.Pashler et al., 2008
- MeasuredMeasured, not labelledShort check-ins days later show which study methods actually stick for each student, and set their pace.Roediger & Karpicke, 2006; Koedinger et al., 2023
- GuardrailsAI that helps you thinkStudents using unguided AI did worse once it was taken away. Our AI asks questions instead of giving answers.Bastani et al., 2025
Aligned to your standards
Coming soonEvery question will say which official standard it checks, using the open CASE format, and results will read the same way your school reports them.
- Common Core
- Next Generation Science
- Ontario
- British Columbia
- Australian Curriculum v9
- New Zealand Curriculum
- England National Curriculum
- CEFR for languages
Our privacy promises
- Uploaded textbooks stay private. Nobody can view or download them; only the study material is shared.
- A student’s learning history is theirs alone, and they can delete it at any time.
- We ask a parent’s permission before storing anything about younger students.
- Teachers see a student’s progress only after the student agrees, and every view is logged.
- We never sell data, show ads, or use student or teacher data to train AI.
Get your evenings back.
Search for the textbook you teach from. If it isn’t here yet, add it and the shelf builds itself.