AI Whiteboard
Write it out by hand. Ollie marks each step and shows you what to fix.
AI-personalized K–12 learning
Learning that takes the shape of your child.
- AI tutorOllie explains it her way
- Parent viewParents see real progress
- Test outSkips what she knows
- AI WhiteboardOllie checks her work
- STEM LabHands-on STEM labs
A K–12 learning companion for homeschool and after-school families: structured lessons, an AI tutor that adapts to your child, and progress parents can understand.
- Free plan, no card
- Kindergarten to Grade 12
- Not an accredited school
- Plans from $15/mo
The OHM film
See how OHM School works.
What it is, who it's for, how a learner learns and grows, and how parents stay close, in under two minutes.
- Grades, Kindergarten to 12
- 13
- Grades, Kindergarten to 12
- Courses on the shelf
- 69
- Courses on the shelf
- Lessons, each with a quiz
- 2,641
- Lessons, each with a quiz
- A tutor who knows the lesson you're on
- Ollie
- A tutor who knows the lesson you're on
The curriculum
Every subject is a book. Every unit, a page.
Pick a grade, then tap any book on its shelf to open it: its units, its lessons, and the check at the end of every unit.
Browse the whole curriculumShowing Math, Grade 5
Unit check
5
Unit check
Prove it. Turn the page.
92%
Tested out
Already know it?
Test out at 90% and skip ahead.Missed a part?
Re-learn just that part, then try again.OHM School · Grade 5
Math
9 units · 45 lessons
Math
1
Grade 5 · Math
Contents
9 units · 45 lessons, in the order they are learned
- 1Numerical Expressions and Patterns3
- 2Place Value with Decimals5
- 3Multiplying and Dividing Whole Numbers5
- 4Decimal Operations7
- 5Fraction Operations11
- 6Measurement and Data2
- 7Volume6
- 8The Coordinate Plane4
+ 1 more unit
Unit 5
2
Unit 5 · 11 lessons
Fraction Operations
11 lessons, one idea each, then a unit check.
- 1Adding and Subtracting Fractions with Unlike DenominatorsStart here
- 2Adding and Subtracting Mixed Numbers
- 3Fraction Word Problems and Estimation
- 4Fractions as Division
- +7more lessons, then the unit check
Math
3
Lesson 1 of 11
Adding and Subtracting Fractions with Unlike Denominators
2 of 6
- ✓The big idea
- ✓How it works
- 3Worked example
- 4Diagram lab
- 5Explore & practice
- 6Key takeaways
Up next · Worked example
Each part is short, and Ollie is one tap away in every one of them.
Math
4
How it works
Read it, see it, try it.
A picture for every idea, and a hands-on try before any quiz.
OllieStuck? Ask me for a hint. I won't just give you the answer.
Try it live
Take a real OHM lesson, right now.
A whole lesson, from the first page to the quiz, with no account.
- ReadRead
- WatchWatch Ollie
- TryTry it
- QuizQuiz
Try a free lesson
- Free
- No sign-up
- About 8 minutes
Inside a lesson
One lesson, start to finish.
Read it, watch it, see it, ask about it, try it, practise it, then prove it on the quiz. Here is how a Grade 5 lesson goes, step by step. Tap anywhere in it to hear it explained.
Meet Ollie
Stuck? Ollie is already there.
A patient tutor right beside your child's work, who explains in simple words and coaches rather than hands over answers. Parents can switch Ollie off at any time.
Practice
Practice that sticks.
Work it out by hand, bring it back as it fades, and sit a full timed paper when it counts.
Daily Review
Cards come back as they start to fade.
Mock Exams
Timed papers from your own lessons.
Focus Areas
Tricky ideas, pinned until they're cleared.
My Notes
Every highlight and note, in one place.
Study Kit
Flashcards and a one-page cheat sheet for any unit.
Learning Circles
Family groups that share a task and give feedback.
Rewards
Coins, quests and streaks for steady work, spent in the shop.
Mastery
Know it already? Prove it and move on.
Nobody sits through what they've mastered, and nobody moves on with a gap left behind.
Test out
Score 90% on a lesson or unit test and skip ahead.
Re-learn just the gaps
Missed a part? Only that part opens again.
Recheck later
Three days on, the missed parts come back as a check.
Finish the grade
Finish a subject, pass its unit checks and master most of it: its certificate is yours.
New · SI ReadySI means Super Intelligence, the new word for AI.
Think for yourself in a world with AI.
Extra lessons at every grade on how to think, handle feelings, check what AI says and build things of your own.
Start free 138 lessons, K to 12
Kindergarten
Why Do Things Fall?
Grade 1
What Makes a Good Question?
Grade 5
What Makes a Prompt Clear?
Grade 7
How Can AI Be Wrong?
Grade 9
Training a Classifier by Hand
Grade 12
Pitching and Presenting Your Project
1. Learn
Every lesson comes in short parts, one at a time.
2. Make
A project from your own idea, on a problem near you.
3. Show
Your work in one place for your family, and a lantern lit for every lesson you finish.
STEM Lab
Guess first. Then run the experiment.
Hands-on labs in every science and maths: change the mass, the angle or the mix, watch what happens, then explain why.
- PhysicsRamp Crash Energy Lab
- ChemistryAtom Builder
- BiologyExplore the Cell
- MathsLinear Function Grapher
- Earth & SpacePlate Boundary Explorer
- Computer ScienceGuide the Robot: Loops
- Civics & EconomicsRun a Lemonade Stand
OHM Explorer · for grown-ups
Name any topic. Ollie writes the course.
Shaping the plan is free. Your first course is on us, then 10 courses for $5 or 30 courses for $12.
Open OHM ExplorerStudents get this too. It's called Explore.
Beyond the school subjects, a student can type anything they wonder about. Ollie checks the topic is right for their age and writes a short course with practice and a quiz.
For the grown-ups
Your child learns. You stay close.
A family site of your own: what they learned this week, a way to help, a note to send, and the controls that are yours.
How parents stay closeYour family journal
What's next for them, and one way you can help.
A weekly briefing
Three plain signals, never their private chats.
Letters from home
A short note arrives sealed, on their screen.
Their own sign-in
For younger children: a username and a PIN, no email.
Plan & tools
Which days, how long, which subjects, and whether Ollie is on.
No ads, no selling your data. Tutor chats stay private, and if something in one needs a grown-up, you hear about it.
Plans
Start free. Grow when you're ready.
A plan for a student, one for the whole family, and courses for grown-ups. Every lesson, quiz, lab and report is in every plan.
Yearly plans: 2 months free. Prices in US dollars.
See full pricingStraight answers
Questions parents actually ask.
Short answers, and every one is true of OHM today.
What grades does OHM School cover?
Kindergarten through Grade 12. Browse the curriculum pages without an account to see the current published grades, subjects, units and lesson outlines.
How much does OHM School cost?
Every student can start free: the curriculum, lessons, assessments and progress reports, with 10 Ollie tutor messages and one new Explore course a month. OHM Pro ($15 a month) and OHM Pro+ ($25 a month) add more tutor messages, course credits and homework photo help, and yearly billing gives two months free. Adults who only want the AI Course Creator can try one course free, then buy credit packs from $5. Full details are on the pricing page.
Does my child have to be homeschooled to use it?
No. Families use it as a supplement alongside school, and others build a fuller plan around it. OHM School is a learning platform rather than an accredited school, so legal schooling requirements still depend on where you live.
Is the AI tutor safe for my child to talk to?
Ollie is designed for lesson-focused schoolwork rather than open-ended internet chat. The system provides lesson context, blocks unsafe links, rate-limits use, and has provider fallbacks; no AI system is infallible, so families should still review its guidance.
What data does OHM collect about my child?
Account basics and learning activity — lessons opened, practice attempted, mastery reached. It is used to adapt lessons and show you progress, and it is never sold or used for targeted ads. The full details live in our privacy policy.
Can we delete our data if we leave?
Yes. You can first download active records and then start verified account deletion from the profile page. Account-linked active data is deleted; a minimized receipt remains for 90 days, and encrypted recovery copies expire under the published backup window.
What happens when my child struggles?
The path slows down instead of pushing forward. OHM offers a different explanation, schedules review, and marks the concept in your dashboard so nothing gets silently skipped.
How do I follow progress without hovering over their shoulder?
Open the guardian dashboard whenever you like, or just read the weekly digest when its notification arrives each Monday. Both are written for parents: what was learned, what was mastered, what needs attention.
How is written work marked?
Practice is worked on an AI whiteboard that reads handwriting and grades the reasoning, not only the final answer. A child who reaches the right answer by the wrong route is picked up, rather than passed.
Still wondering?
Every other question we get is answered on one page. Or write to us.
Grades K–12 · Free to startKindergarten to Grade 12 · Free to start
The future of learning starts here.
Help every child discover who they are, what they love, and what they're capable of becoming.
