It helps to separate two questions that get tangled together, because they have different answers:
- Can the grade be changed at all? Usually yes — correcting a clerical or marking error is normal administrative business.
- Can you still compel a review? Often no. Grade-appeal windows are short and are set by your institution.
Updated August 2026
Is there a time limit on changing a grade?
There is no single national rule. Many institutions place no explicit outer limit on submitting a corrected grade, because a mistake is a mistake whenever it is found — a transposed number, a misread total, an assessment omitted from the calculation.
But plenty of institutions do close the record at some point, and after graduation is the usual trigger. MIT’s registrar states it plainly: “When you leave MIT, either after your degree is awarded or for other reasons, there is a three-month period during which certain changes can be made to your record. After that, your record is sealed.”
MIT also notes a limit that applies everywhere in spirit: a grade cannot be changed as the result of additional work submitted after the final grade. A correction fixes what was already assessed — it is not a second chance to improve the mark.
Why two years is genuinely difficult
Your script may no longer exist
Re-marking requires the paper. Retention windows are shorter than students expect — commonly about a year for graded work not returned to the student, and set by each institution. If the script has been disposed of under that schedule, a re-mark is simply not possible, whatever the policy on changes says. (More on this in how long professors keep old papers.)
The appeal window has closed
Institutions commonly ask students to raise grade queries within weeks of results being published rather than months or years. Once that deadline passes you are asking for a discretionary exception rather than exercising a right, and the burden on you is much higher.
Your record may be sealed
As at MIT, leaving or graduating can start a short closing window after which the transcript is fixed.
Memory and context are gone
Even a willing professor may no longer have the rubric annotations, the cohort context or a clear recollection of the assessment. A clerical error is still provable from records; a judgement call about marking quality generally is not, two years on.
When a late change is realistic
Late corrections do happen, and they cluster around a few situations:
| Situation | Realistic after two years? |
|---|---|
| Clerical error — wrong grade entered, marks added up incorrectly | Often yes. It is provable from existing records without the script. |
| An assessment was never counted | Often yes, if you can evidence the submission. |
| Incomplete resolved late | Yes — this is a normal, expected grade change. |
| Academic integrity finding | Yes, and it can move a grade down as well as up. |
| You disagree with the marking | Rarely. The appeal window has closed and the script is probably gone. |
| You want to redo work to improve it | No. Grades are not changed on the basis of work submitted after the fact. |
What counts as evidence
Approaching a professor to say you think the grade was wrong will not move anything on its own. What works is documentation that points at a specific, checkable discrepancy:
- A returned script or feedback sheet whose marks do not total the grade recorded
- Submission confirmations or timestamps for work that appears not to have been counted
- The syllabus or rubric showing the stated weighting, next to what was applied
- Written correspondence about an extension, accommodation or incomplete
- The transcript entry itself, where it disagrees with the marks you were given at the time
Notice what is missing from that list: your recollection of how well you did. Two years on, a case has to rest on documents.
What a late change affects downstream
Anyone asking about a grade from two years ago has usually already used the transcript it sits on. That is worth thinking through before you start, because a corrected grade does not automatically propagate.
Transcripts already sent
Copies issued to employers, graduate schools or licensing bodies are snapshots. If a grade changes afterwards, the recipient still holds the old version unless a fresh transcript is sent. Ask the registrar what they will reissue and to whom.
GPA and honours
A corrected grade recalculates your GPA, which can matter for honours designations already conferred. Institutions differ on whether a posthumous recalculation changes an awarded distinction, and it is a fair question to ask up front rather than discover afterwards.
Financial aid and scholarships
If a grade contributed to a satisfactory-progress determination, a correction may be relevant to a past decision. This cuts both ways — it is worth raising with the financial aid office rather than assuming it resolves itself.
Degree status
Where a failed course blocked a requirement, a correction can change whether the requirement was met. That is one of the strongest reasons an institution will look at a late request, and worth stating explicitly if it applies to you.
The practical move is to say what the correction is for when you make the request. “This affects whether I met a graduation requirement” gets a different response from “I think the mark was harsh.” The first names a concrete consequence someone has to resolve; the second asks for a favour.
How to request a grade change
- Read your institution’s grade-appeal policy first. It sets the deadline, the grounds and the order of escalation, and it overrides any general advice — including this page.
- Contact the professor. Be specific about the discrepancy and attach the evidence. Most legitimate corrections end here, because the professor can simply file the change.
- Escalate to the department chair if the professor disagrees or has left the institution. The department can act where the individual instructor cannot.
- Go to the dean or review board as the final internal step. This is where a formal grade-change form and a documented case are usually required.
- Ask what is still possible rather than assuming. Even where a re-mark is off the table, an administrative correction may not be.
Throughout, keep it factual. A late request already asks for goodwill; framing it as an error to be corrected rather than an injustice to be avenged makes it considerably easier for someone to say yes.
Frequently asked questions
Can a professor change a grade after two years?
Often yes for a genuine correction such as a clerical error, since many institutions set no outer limit on fixing a mistake. What usually blocks it is a closed appeal window, a sealed record after graduation, or a script that has been disposed of.
Can a grade be lowered after it is posted?
Yes. A correction can go either way, and an academic-integrity finding after the fact can reduce a grade.
Can I redo work to improve an old grade?
No. Grades are not changed on the basis of additional work submitted after the final grade — MIT states this explicitly and it is the general principle elsewhere.
What if the professor has left the university?
Go to the department chair. Departments can process corrections when the original instructor is unavailable, though the evidence burden on you is higher.
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Josh Hutcheson — Editor, PriorityLearn
Josh researches, writes, and updates the answers on PriorityLearn, checking each one against current tools, official sources, and real school policies — and flagging what varies by state or district. About PriorityLearn →