Everything it does

Features

Partial Credit helps you grade multistep engineering homework faster without handing the grade to a machine. Here is everything it does today.

Set up an assignment

Rubrics of signed items. Each question gets items that add or deduct points; totals are computed in code, never by the AI. Rubrics are versioned, and a change reopens the approvals it affects.
Drafts from your files. Upload the problem statement and solution key, or paste text, and get a draft rubric to edit. Nothing is saved until you save it.
Keys per question. Attach one key for the whole assignment or a key to each question, with the pages for each question marked.
Student windows. Release, due and late-due times, late work on or off, and per-student extensions.

PDFs and photos. Students upload a PDF or up to 40 phone photos, which are downscaled, contrast-adjusted and combined into one PDF in the browser.
Pages matched to questions. Pages are matched from question headings or your handout’s layout for free, then confirmed by the student. An optional low-resolution AI pass handles scans without headings.
Every attempt kept. Students can resubmit until the deadline; late work is marked; each attempt gets an emailed receipt.
Batch uploads for instructors. Bring in a stack of scanned submissions at once, with pages assigned the same way.

Suggestions you can check. Each suggested rubric item cites the page and the expression it rests on. Nothing is applied until you accept it.
Exact math checks. Controllability rank, characteristic polynomials, state-feedback gains and 2-D equilibrium are verified exactly in code. Results support your decision; they never change a mark.
Question focus. Open a question and see only the pages that answer it, with the rubric beside them.
AI on request. Run AI on one question or a whole assignment in the background, only after you choose to. Mismatched problem versions and unverified full credit are flagged instead of passed through.
No AI required. You can also copy a prepared prompt into the assistant you already use and paste the result back, or grade entirely by hand.

Explicit approval. Every grade is approved by an instructor or TA; only instructors publish. Students see nothing before you publish.
Per-question feedback. Students see their score, the rubric items applied and your comments for each question.
Regrade requests. Students ask about a specific question; you answer from one queue with the full history.
Exports and LMS grades. Download approved grades as CSV, or send published grades to your LMS gradebook (LMS integration).

Accuracy against your own grading. Import grades you already gave on a past assignment and compare: where the AI agrees, where it is lenient or harsh, and which rubric items it misses.
Review log. Approvals, reopened reviews, rubric changes and grade releases are recorded with their time.

LMS integration. Canvas, Moodle and Brightspace through LTI 1.3 (dynamic registration, course linking, roster sync, grade return, student launches), and Google Classroom directly.
Sign-in. One-time email links or Google; students can also enter from the LMS. Course roles decide what each person sees.
Data care. Backups every 15 minutes, kept for 30 days in a separate locked store. Submissions can be permanently deleted.
Status. Partial Credit is early-access software. It has not yet completed an institutional security or privacy review; write to us before using it with student records.