User guide

Get started in 3 steps

1. Add your answer key: type the expected answers and the points per question, or drop the key as a PDF or photos. The answer key is never charged.
2. Drop the student work: a scanned PDF of the whole stack, photos, or scan the stack with your phone.
3. Click “Grade”, then review. Every paper gets points per question, a justification and feedback for the student. You have the final say: everything can be edited before export.

For writing, choose the Language check tab: errors are highlighted right on the paper.

Access key, trial and pages

• No account: you get an access key (e.g. CE-XXXXX-XXXXX-XXXXX) that holds your page balance. Write it down: it lets you use your pages on another device and top up. It also appears on your payment receipt.
• Free trial: 30 pages, no credit card. A trial key that was never used for a purchase is deleted after 90 days.
• What is charged: 1 page of student work = 1 page in quick mode, 2 pages in in-depth mode (double grading). The answer key, paper detection, photo straightening and the detailed rubric are free. An illegible paper is not charged.
• Packs: one-time payment, no subscription; purchased pages never expire.
• Already have a key? On the access screen, enter it under “I already have an access key”.

Importing student work

• Accepted formats: PDF (a scan of the whole stack works), photos (JPG, PNG, iPhone HEIC…), Word (.docx) and text (.txt). Several files at once, by drag and drop or by clicking.
• Grouping pages: tell the app how pages form papers:
  • 1 file = 1 student;
  • Fixed number of pages per student (e.g. 2 pages each);
  • Automatic detection: the AI finds where each paper starts (free).
• Check the grouping on the thumbnails: ✂ splits two pages, “merge” attaches a paper to the previous one, × removes a page. Click a thumbnail to enlarge it.
• Sideways photos are straightened automatically; the ↻ button on a thumbnail rotates it by hand.
• Limit: 10 pages per paper. Beyond that, it is probably several students: use a fixed number of pages or ✂.

Scanning with your phone

• On a phone, the Scan “Burn the Pile” button opens the camera. Frame the sheet within the corner marks and tap Start.
• Turn the pages in front of the phone: each sheet is photographed on its own as soon as it is still and sharp (beep, vibration and green flash). Nothing is photographed before “Start”, so the table or your hand are not captured.
• Pages per student: set it before you begin. “Undo last” removes a bad photo; ◉ takes a photo by hand.
• Tap Done: you review the stack, then start grading. The “Grade while capturing” option grades as you go.

Answer key, instructions and detailed rubric

• An answer key greatly improves reliability: expected answers, points per question, accepted answers, what earns partial credit. Without a key, grades tend to be generous.
• Type it in the box, or drop it as a PDF or photos (6 pages at most). It is not charged.
• How results are written can be requested in the same box: “2-sentence feedback that starts with a strength”, “short justifications”, etc.
• Detailed rubric (free), recommended for written work: the AI drafts precise levels for each criterion, you approve them, and the same rubric applies to every paper. Grades become more consistent.
• On a large stack of the same test, the question breakdown of the first paper serves as the model for the others, so every paper is split the same way.

Quick or in-depth grading

• Quick: a single grading, 1 page used per page.
• In-depth: two independent gradings; the grade kept is their average, question by question. A reliability score (%) measures how much they agree, and questions where they differ are flagged ⚖. 2 pages used per page.
• The choice is in the Advanced view.

Calibration: a pile marked your way

Just like marking a few papers first to “get your eye in”, calibration shows the tool how you mark before it marks the rest of the pile.

• With more than 4 papers, click “🎯 Calibrate first”: only 3 papers are marked.
• Review them and change any marks you disagree with. A “Why?” field appears: a short reason helps a lot (e.g. “I accept a general consequence if it is explained”), but it is optional.
• Then click “Grade” for the rest: each changed mark becomes an example (the student’s answer, the suggested mark, yours and your reason). The tool applies the same criteria without copying your marks.
• Marks you change later, while reviewing, also guide the papers marked afterwards. Calibration applies to the same assessment (same name, total and answer key).
• Nothing is stored on our servers: the examples stay in your browser and are sent with each paper. No extra pages are used.

Language check

• Language check tab: the AI finds the errors on each page and highlights them on the paper, with the correction and the rule. 1 page of student work = 1 page used.
• Choose the student level and the types of errors to flag: spelling, agreement, verb forms, punctuation, sentence structure, word choice.
• Optional: a score (out of, points off per error, maximum deduction).
• A second reading then runs in the background and may add missed errors. An error whose reading is doubtful is marked “to check” and is not counted.
• In View annotated paper, you can delete a wrongly flagged error, add a missed one, and print the highlighted paper.

Reviewing and editing results

• Each paper appears on one line: paper number, name, class, grade. Click the line to open it; papers to review are marked ⚠.
• In the sheet: the points and justification for each question. Edit the points directly, rewrite the feedback, fill in the name or class.
• Statistics show the average, minimum and maximum, and the average by question shows the one the class struggled with most.
• Search for a student filters the list (and printing).
• AI grades are suggestions: review the ⚠ papers first.

Exporting and printing

• Download results (CSV): a file that opens in Excel or imports into your gradebook. One column per question when every paper has the same breakdown. The language check has its own file.
• View graded paper: the paper marked up as if by hand: green ✓ on correct answers, red box (and ✗ if no points) on the others, the grade at the top and, in the margin, the points and a short note per question, plus the feedback.
• Print…: all papers at once, in stack order. Your choice: the annotated papers, the result sheets (several per page, to cut out) or both (each student’s sheet, then their paper). To save as PDF, choose “Save as PDF” as the printer.
• End session clears everything from the tab; the app first offers to download the CSV.

Student privacy

• No student paper, grade or name is stored on our servers. Papers are passed, without being saved, to our AI provider (Google, paid tier: your data is not used to train its models).
• Hide the student’s name: the top of each paper’s first page is blanked in your browser before sending (adjustable height, and on every page if needed). You enter the names yourself. A student code remains the safest option.
• Details and documents for schools: see the privacy policy.

Important limits to know

Simple or advanced view

• Simple (default): only the essentials (assessment name, total points, answer key, student work).
• Advanced: the fine settings (default class, half points, in-depth mode, language of the papers and feedback, spelling in the grade, detailed rubric, name-hiding options).
• Advanced settings stay applied in the simple view; a line warns you if one of them is not at its default value.