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An AI grader for teachers earns a place in your marking when you can explain every score that goes home. Ask the questions below of any tool before you upload a class, and ask them again of each graded batch: your key, every mark, hard-to-read answers, diagrams, feedback, student papers, and a spot-check.
Graider is the AI red pen for paper grading, a product of DM Liquidity LLC. You upload a test and an answer key, photograph the stack of student papers, and Graider marks against your own rubric or key. You review and override any mark, toggle feedback on or off, keep the pen, and hand the work back as a PDF or an email. The product introduction is AI grader for teachers. Quizzes and unit tests that follow the same loop are on AI test grading. The public site is graider.org.
Your key. Their papers. You ask the questions. You keep the pen.
The first question is the source of the score. A mark you can defend comes from the answer key and rubric you already use. The key holds the responses you accept, the point values, and the partial credit. The rubric holds the marking language around that key: which method counts, what a complete response includes, and which mistakes you comment on every time.
On Graider, you upload the test and that key. If the rubric lives on its own sheet, upload the sheet with the key. Before you upload, check each question number, the points, and the accepted response on your key against the paper students sat. The first pass follows the rows that are on the key you upload.
Question 2 is a term worth 2 points, with one synonym on the key. Either wording earns 2. Question 6 is worth 4: the setup earns 2, and the substitution earns 2. A correct setup with a wrong substitution earns the 2 on that row, with the comment you already wrote for that miss. When your judgment and the first pass disagree, you override the mark.
Open each paper. You should see the prompt, the student's answer as text, the points, and the comment.
Graider shows that line. You can override any mark. Change the points when you would explain the score differently. Edit the comment so it is the sentence you would write in the margin. On question 6, keep the 2 points for a right setup when the substitution is the miss you named. If the page shows a method you accept and did not list, change the points. The score that goes home is the score you kept.
Handwriting varies inside one class. Pencil lightens. A word runs into the margin. Ask what the tool does when the read is shaky, and where that signal shows on this batch.
Graider shows one flag: the Low confidence badge on a hard-to-read answer. Open every badge. Open the photograph, compare the line with your key, and override the score when the page and the first pass disagree. That badge is the only flag. A faint synonym on question 2 is one to open: give the 2 points if the photograph shows the accepted word. When a page is too faint or too cropped to read, photograph it again before you rely on the score.
Some questions are pictures: a labeled cell, a graph with a scale, a sketch of a lab setup. Ask whether the tool scores the drawing, or whether that score stays with you.
Graider does not read or score diagrams, graphs, or drawings. You mark those yourself. A written label or a written value next to the drawing stays on the key with the other written answers, and that written line can be marked from the key. If question 4 is a graph, set that score at review. Note on the key, before you upload, that the graph is yours to score.
A score and a comment are two decisions. Ask whether you can send both, the points only, or a comment you rewrote, before anyone else sees the paper.
On Graider you toggle feedback on or off before handback. Turn comments on when they should travel with the score. Leave them off when the score is enough. Edit a comment so the words a student reads are the words you kept. Then hand each paper back as a PDF or an email.
The PDF names the test and the student. When you include the score, it shows points earned out of points possible. When you include feedback, the comment you kept sits with that question. You can leave the score off, or leave the feedback off. A student with an email address on the roster can get a message that the grade is ready, with a link to the marks and the feedback you left on. You keep the pen.
Ask this before a photograph or a roster is uploaded. Read the answer against your school rules. If the wording is unclear, ask the person who owns the policy before a class set goes up.
Graider's answer is one claim: student papers and account data aren't used to train models or for advertising. You still decide which marks and which comments go home.
A spot-check is the reading you do on this stack before it goes home. You can open every paper. Confirm the pages are matched to the right students, including a second page when the answer continues there. Confirm the key that ran: point values, accepted answers, and partial credit. Open every Low confidence badge, compare the photograph with the key, and override when they disagree.
Then read one question on several papers. The same accepted answer should carry the same points. When a paper does not match that row, keep the points that match the row you wrote and override the rest.
Score diagrams, graphs, and drawings yourself, including the graph on question 4. Then read three full papers: one from the top, one from the middle, and one that looks unusual. Change any mark you would explain differently, edit the comments, and toggle feedback. Hand the batch back as a PDF or an email when you can stand behind the scores. A longer exam uses the same questions on AI exam grading.
Ask whether marks follow your own key, whether you can see and override every mark, how hard-to-read answers are flagged, who scores diagrams, whether you control feedback, what happens to student papers, and how you spot-check.
Yes. Upload the test and the answer key or rubric you already use. Photograph the papers. Graider marks those photographs against that key. You review before a score goes home.
The Low confidence badge. Open the photograph, compare the line with your key, and override the score when the page and the first pass disagree. That badge is the only flag.
Yes. Override any mark, edit the comment, and toggle feedback on or off. Hand the paper back as a PDF or an email when you can stand behind the score. You keep the pen.
Student papers and account data aren't used to train models or for advertising.
Ask the questions of the tool, then ask them of the batch. Review the marks, and hand the work back when you can stand behind the scores. You keep the pen.