Every student against the same standard
The last test in the pile is held against the same mark scheme as the first. If two students get clearly different scores for the same answer, GraidLens flags it.
AI grading software for secondary schools Marking with AI.
Marking with AI.
You have the final say.
You take photos of your students' work. GraidLens reads the answers, compares them with your mark scheme and suggests a score per question. You check, adjust where needed and approve. Only then does the grade count.
- Stored in Europe
- Mark scheme per question
- You approve every grade
Stored in Europe
100% of grades approved by you
GraidLens never finalises a grade on its own.
Made for
Secondary schools
MBO institutions
Exam boards
School networks
Day-to-day grading
How a test goes through GraidLens
From blank test to grade list. The first time, setting up the mark scheme takes the most time.
Get started
How a test goes through GraidLens
- 1Type in the questions and the mark scheme, or take photos of the blank test and the mark scheme. GraidLens turns them into a draft for you to check.
- 2Photos of the students' work, from your phone or your computer. Several pages per student is fine.
- 3Once you approve, the grade goes into the grade list. Export it as a CSV file or share the feedback with students.
Time back
How much time do you get back?
Work it out with your own numbers. You still check every student. GraidLens does the reading, the comparing with your mark scheme and the adding up of points.
An example, not a measurement. Each test includes 10 minutes to set up the mark scheme, and a school year counts as 10 months. With the starting values you mark for 3.9 hours a week. Full-time teachers in OECD countries report 4.6 hours a week on average. OECD, Results from TALIS 2024
You get back about
10.2hours a month
≈ 2.4 hours a week · ≈ 102 hours a school year
Try it on your next testMore than time
What else you get
Your time goes to the doubtful cases
Each suggestion shows how sure GraidLens is. You start with what is in doubt, not with what is clearly right or wrong.
Feedback for every student
Each question gets a short explanation that you can edit and pass on to the student. Dictate your own remark and GraidLens turns it into a tidy sentence.
See where the class got stuck
After marking you see how the class did on each question, with p-value and item-rest correlation, and the reliability of the whole test. So you know what to explain again.
The next test goes faster
Questions and mark schemes stay in your question bank. When you correct how GraidLens read someone's handwriting, it uses that correction on that student's next test.
Marking without sitting there
Upload the photos and do something else. Marking carries on in the background, even if you close the window.
Features
What's included
p-value and item-rest correlation per question, Cronbach's alpha and measurement error for the whole test.
Mark scheme per question
Points, criteria and example answers per question. GraidLens points out criteria that can be read in more than one way.
Mark by question
All answers to one question listed together, identical answers grouped. That keeps you consistent.
Doubtful cases first
Each suggestion shows how certain GraidLens is. Start with the doubtful ones.
Grading scales
The Dutch 1–10 scale, or the scales used in Belgium, Germany, France, the UK and other countries, or percentages.
Roles
GraidLens for a department or a whole school
Roles · Teacher
Teacher
Set up a test, photograph the students' work and check GraidLens's suggestions question by question. You approve every grade.
Explore
Grading
Progress & reporting
Test analysis
p-value and item-rest correlation per question, Cronbach's alpha and measurement error for the whole test.
For schools
GraidLens for a department or a whole school
Teachers can use GraidLens on their own. If you want to arrange it as a school, this is what it involves: management, privacy agreements, costs and a plan for a pilot.
Pricing
Pricing
Two plans for teachers and a licence for schools. All features are included in every plan. The difference is how many tests you create per month. Creating an account is free and doesn't ask for payment details. Your first plan starts with 14 days free. After that it continues at the normal price unless you cancel within those 14 days.
Teacher
For a few tests a month.
€31/ month
- Up to 5 new tests per month
- No limit on students per test
- All features
Teacher Pro
Teacher Pro!For teachers marking several classes or subjects.
€62/ month
- Up to 20 new tests per month
- No limit on students per test
- All features
For schools
Per teacher per month, one invoice for the school
Talk to us
- On request — Per teacher per month, one invoice for the school
- Database and files are in the EU.
Support
Look it up yourself first?
The help articles answer the most common questions about using GraidLens. A question, found a bug, or interested as a school? Send a message using the form or email us directly.
hello@graidlens.eu
FAQ
Frequently asked questions
Do I still have to mark everything myself?
You don't have to reread every answer, but you do approve every student. How thoroughly you check is up to you. GraidLens shows where it is unsure, so you know where to look.
How accurate is it?
That varies per test. It depends on the handwriting, the type of question and how precise your mark scheme is. Short answers with a clear mark scheme go better than long, reflective answers. There is no independent research into its accuracy yet, so we don't quote percentages. Our advice: mark the first test yourself as well and compare.
Can GraidLens read my students' handwriting?
Usually, but not always. For every answer you see what GraidLens read, so you spot a reading error straight away. If you correct the text that was read, GraidLens uses that correction as an example for later tests by the same student.
Which subjects does it work for?
Any subject with written answers. It works best for questions with a clear mark scheme: terms, short explanations, calculations with working. With drawings, graphs and long formulas you'll need to step in more often.
Does it connect to our student information system?
Not directly. You download a CSV file and import it yourself. For the Dutch systems Magister and Somtoday the file is already in the right format. You paste student labels into a class in GraidLens as a list.
Is this allowed under the GDPR?
Your school is responsible for students' data; GraidLens processes it on the school's behalf. That requires a data processing agreement, which schools request from us. A grade is never set automatically: a teacher approves it. If in doubt, talk to your school's data protection officer.
What if GraidLens gets it wrong?
Then you change the score. Your score counts, not the suggestion. You can also sharpen the mark scheme and have the rest of the class marked again.
Get started
Try it on your next test.
Create an account, set up a test and let GraidLens mark a few students. The first time, mark them yourself as well and compare.
Create account