Auto marking-scheme detection
Drop in a quiz, test or assignment and the system infers the scheme — questions, marks and K/T/C/A categories — for you to review and confirm before a single mark is given.
For Ontario schools & tutoring centres
AI grading, built for Ontario classrooms.
Upload a class set. Our Ontario-trained AI marks every question against your marking scheme — Knowledge, Thinking, Communication, Application — and pins each comment to the exact spot on the page it came from. You review, adjust, export.
3-day free trial · 8 grading credits · your own branded subdomain. 75 Ontario course codes. Cancel anytime.
Native support for the Ontario curriculum — 75 course codes, grades 9–12, plus Language and ESL courses, with K/T/C/A categories
- MTH1W Grade 9 Math
- MPM2D Principles of Mathematics
- MCR3U Functions
- MHF4U Advanced Functions
- MCV4U Calculus & Vectors
- MDM4U Data Management
- ENL1W Grade 9 English
- ENG4U Grade 12 English
- SNC1W Grade 9 Science
- SBI4U Biology
- SCH4U Chemistry
- SPH4U Physics
- CHC2D Canadian History
- CGC1W Canadian Geography
- ICS3U Computer Science
- FSF1D Core French
The marked page
Every comment points at the exact spot it’s about.
The AI marks each question, writes the reason, and pins it to the line on the page it came from. You drag anything you disagree with — and it all bakes into the PDF the student gets back.
- Anchored by the model — drag any card to move it.
- Annotations bake into the exported PDF.
- Unplaced feedback is tracked until you place it.
How it works
Five steps, sign-up to graded
No setup calls, no training. If you can upload a PDF, you can grade a class.
- 1
Sign up your school
Create your school, pick your plan (monthly or annual), and you're in — your own branded subdomain and a 3-day trial.
- 2
Create a task & upload
Pick your Ontario course (MTH1W, ENG4U, SBI4U…), then drop in student PDFs — typed or scanned.
- 3
Confirm the marking scheme
AI detects the scheme automatically. You review the questions, marks and K/T/C/A split, then confirm.
- 4
Run the grading
Our AI grades every submission per question, flags anything uncertain, and tallies class-level stats.
- 5
Review & export
Check the annotated PDFs, clear the review queue, and export the whole class as a ZIP of graded PDFs.
01 · Before any marks are given
It reads the marking scheme, then asks you to confirm it
Upload the assessment and its scheme and the questions, marks and K/T/C/A split come back filled in. Every number is editable, the category totals recompute as you type, and if K+T+C+A doesn't match a question's total it says so — with a one-click fix. Nothing is graded until you confirm.
The scheme is detected, then you confirm it — before any marks are given.
02 · Handwriting
Scanned work is transcribed — and you can correct it
Photograph or scan a paper test and it's read by vision AI. The transcript sits beside the original so you can spot-check it, and if something was misread you fix the text and re-grade — with no second scan.
Handwriting is transcribed — and you can fix the transcript before it's graded.
03 · Essays
Marked against your rubric, per Ontario category
On Pro and up, essays are graded against the rubric from your own assignment. Each of Knowledge, Thinking, Communication and Application gets a mark and an achievement level, with the reasoning quoted from the student's own writing. Every mark is editable.
Essays are marked per K/T/C/A, with the AI's reasoning quoted from the student's own writing. Every mark is editable.
04 · The whole class
The shape of the class, the moment grading finishes
Mean, median and the mark distribution across the class set. Anything the model was unsure about — or that lands far from the class mean — is flagged into a review queue with the reason attached.
The shape of the whole class, the moment grading finishes.
Built to grade
Everything a teacher needs, nothing they don't
AI does the first pass; you stay in control of every mark that goes back to a student.
AI-graded, per question
Our Ontario-trained AI grades every submission question-by-question with written justification, so a teacher can see exactly why each mark was awarded.
No wasted grading spend
Before any expensive grading run, a lightweight pre-check verifies the submission actually contains the questions and mark allocations. Confirmed marking schemes are remembered per assessment — upload once, never pay to detect that assessment again.
Low-confidence review queue
Anything the model is unsure about is flagged into a queue, with the reason it was unsure. Clear it, and it disappears — nothing slips through unseen.
Every AI edit is reversible
Change a mark or rewrite a comment and it's tagged “Edited by teacher”. The original AI output is kept — one click reverts it.
Your own branded subdomain
Sign up and your school gets its own subdomain, logo and colours in under five seconds — your teachers see your brand, not ours.
Watch it grade
Watch a class set get marked
Three moments from every grading run — the scheme check, the marking pass, and your class results. You review everything before it goes home.
Illustrated — see the real screens above.
Made for Ontario
Not “AI grading” in general. Grading for your curriculum.
Most tools bolt a rubric onto a chatbot. Ontario Grading AI speaks the language of the Ontario classroom out of the box.
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K / T / C / A, natively
Marks map to Knowledge, Thinking, Communication and Application — the Ontario achievement chart, not a generic rubric.
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Every Ontario course code
75 codes, grades 9–12, plus Language and ESL courses — from MTH1W to MCV4U, ENG4U to SBI4U — recognised automatically.
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Achievement levels, not just percentages
Rubric criteria are read off your own marking scheme, and each student is placed at Level 1–4 per criterion — with the reasoning shown.
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Your data stays in Canada
Hosted in the ca-central-1 region — student work never leaves the country.
Pricing
One credit, one graded submission
No per-page maths. Pick a plan — monthly or annual — start with a free trial, and scale when your class sets grow.
3-day free trial · 8 credits Cancel anytime from your billing page.
Starter
Save 21%For a single teacher or a small tutoring room.
$19 /mo CAD
Billed annually · $228/yr · or $24/mo monthly
$24 /mo CAD
Billed monthly · cancel anytime
50 graded submissions / month
Start free trial- Auto marking-scheme detection (incl. Ontario K/T/C/A)
- AI-graded, per-question feedback
- Annotated-PDF review + review queue
- Class statistics + ZIP export
- Your own branded subdomain
- 1 grader seat
Most popular
Pro
Save 17%For a busy department that also grades essays.
$49 /mo CAD
Billed annually · $588/yr · or $59/mo monthly
$59 /mo CAD
Billed monthly · cancel anytime
125 graded submissions / month
Start free trial- Everything in Starter, plus:
- Essay grading against your rubric
- 3 grader seats
- Faster grading queue (3 at a time)
- Priority support
School
Save 20%For a whole school or multi-campus centre.
$199 /mo CAD
Billed annually · $2,388/yr · or $249/mo monthly
$249 /mo CAD
Billed monthly · cancel anytime
500 graded submissions / month
Talk to us / start trial- Everything in Pro, plus:
- 10 grader seats
- Fastest grading queue (4 at a time)
All prices in CAD — save up to 21% with annual billing. Every school is billed independently. Compare all features →
On the roadmap
Not built yet — and we’d rather say so
Everything else on this page ships today. These two don’t, so they don’t get a checkmark in the pricing table.
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Ontario attendance module
A deterministic, audit-traced calculator for the Ministry's 15% attendance weighting. Designed, not yet built.
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Moodle / LMS connector
Push graded results straight into Moodle. The core flow is deliberately LMS-free and always will be — this is for schools that want it.
FAQ
Questions, answered
The things Ontario teachers and centre directors ask us first.
What exactly is a credit?
One credit grades one submission. A grading run for a class of 28 uses 28 credits; re-grading a student later uses one more. It's the simplest possible unit — no per-page or per-question maths to track.
How does the free trial work?
Every plan starts with a 3-day free trial that includes 8 grading credits — enough to grade a small class set. Cancel anytime from your billing page.
What happens when I hit my monthly credit cap?
Grading pauses — uploading work and reviewing already-graded submissions are never blocked. Buy a credit top-up right in the app (from $15 for 25 credits — top-ups never expire) or upgrade your plan. Monthly credits reset each billing period and don't roll over.
Can I buy extra credits without upgrading?
Yes. Top-up packs — 25 credits for $15, 100 for $55 or 250 for $125 — are one-time purchases from your Billing page. They never expire, and they're only drawn on after your monthly allotment is used up.
Can I change or cancel my plan later?
Yes. Switch tiers, move between monthly and annual billing, update your payment method or cancel — all self-serve from your billing page. Changes prorate automatically.
We run multiple schools or campuses — can we keep them isolated?
Yes. Each school gets its own branded subdomain and isolated environment, with its own billing. Beyond the School tier's 500 credits a month, or several campuses under one agreement, talk to us about Enterprise — hello@ontariogradingai.com.
Can it grade handwritten or scanned work?
Yes — scanned pages are read with vision OCR, and you can correct the transcript before it's graded if anything was misread. Because scans cost more to process, there's a sensible per-assessment page limit on the trial and entry tier so a single huge upload can't run away with your credits.
Which subjects and grades are supported?
The full Ontario catalogue — 75 course codes across grades 9–12, plus Language and ESL courses — with native Knowledge / Thinking / Communication / Application categories. Maths, sciences, English, humanities, computer science and more.
Do I have to connect a learning-management system?
No — and you never will. The whole flow (upload, grade, review, export) is LMS-free by design. A Moodle connector is on our roadmap for schools that want one, but it isn't built yet and the core product doesn't depend on it.
Are the screenshots on this site real?
Yes — they're captured straight from the app, and every mark, comment and confidence flag in them was produced by the real grader. The class is invented: publishing a real student's work would be a privacy breach, so we wrote our own sample assessment and papers and graded those.
Still weighing it up? Email hello@ontariogradingai.com — a real person answers.
Grade your next class set tonight
Create your school, pick your plan — monthly or annual — and put AI grading to work on a real assignment before your coffee gets cold.
3-day free trial · 8 grading credits · cancel anytime from your billing page