LOR From HoD or Professor: Which Is Better?

LOR From HoD or Professor: Which Is Better?

Choose the person who watched your work, not the most senior title. Stanford asks for recommenders "who know you well and are qualified to evaluate your potential for graduate study". CMU asks for people who "know you relatively well and be able to evaluate the quality of your previous work". None of the programs we checked asks for a head of department.

If you have been told that a letter from the HoD or the principal carries more weight, test it against those words. Our view: a senior title helps only when it comes with contact. A head of department who signs a general letter loses to the project guide who saw your work every week, because the reader is looking for evidence, and only someone who assessed you can give it. This page sets out what programs ask for, a decision table for HoD, principal, project guide and subject professor, and the edge cases: a retired professor, a professor from another department, and an online course instructor.

Every university page quoted below was checked on October 31, 2026. None of them states a cycle year for these rules, so recheck your program's own page before you ask anyone.

What programs actually ask for

Cambridge is the only page here that mentions seniority at all, and it puts it third, after "overseen your work" and "knows it well". "Sufficiently senior or experienced" is a floor: the referee must be credible. It is not a ranking that puts a head of department above a professor. CMU adds a practical hint: "Professors who interacted with you extensively in smaller classes are also a good choice."

HoD, principal, project guide, subject professor: a decision table

The table follows one rule from the pages above: the reader wants someone who can "evaluate the quality of your previous work" (CMU). A title does not do that. Observation does.

When the HoD is the right choice

Pick the head of department when one of these is true:

• They taught you or guided your project. Then they are a subject professor or project guide who also happens to be HoD. The title does no harm, and the letter can say how many students they have seen in that role.
• Your college requires the HoD to sign or forward letters. If that is the rule at your institution, the person who knows your work should still write the content. The HoD's signature can sit beside theirs; it should not replace their observations.
• They supervised something no one else saw, such as a department research initiative or a teaching assistant role.

The countercase: if your project guide is junior, new, or has never written for a student abroad, you may worry that their letter looks weak. A junior professor's specific letter is still evidence. Cambridge's floor is "credible judge", and a faculty member who supervised your project meets it.

If the HoD agrees to write but asks you to draft the letter yourself, read the program's rule first. Stanford's page says: "Your recommenders must be the sole authors of your letters of recommendation. Drafting, writing, translating, or submitting your own reference, even if asked to do so by a recommender, is a violation of our application terms. You are responsible for informing your recommenders of this policy." Our page on being asked to write your own letter of recommendation covers what to do next.

Edge cases: retired, other department, online instructor

A retired professor. Oxford's English faculty says: "It is acceptable for your referee to be retired." (Oxford English graduate FAQ). That is one faculty's rule, but its basis applies widely: what matters is that they assessed you. Make sure they can still use an institutional email address, because programs such as Cambridge ask for one.

A professor from another department. Fine, if they taught or supervised you. Cambridge's examples of academic referees include "The teaching lead on a module of particular relevance to your proposed postgraduate course", which says nothing about department.

A PhD student or teaching assistant. Cambridge says: "Do not nominate PhD students. If you have been taught by a PhD student and they know your work well, you can encourage your referee to talk to them."

An online course instructor. Our view: no, unless the instructor graded your own work and talked with you about it. The pages above all ask for someone who assessed you. Some programs rule it out in writing. Toronto's MIE MEng says academic references "must come from a current or previous course instructor/professor from your undergraduate studies" and "References from workshops or other programs not associated with your undergraduate degree will not be accepted." (Toronto MIE MEng). The countercase: a small online course where the instructor graded your project and talked with you can work, at programs that do not exclude it.

A family friend or relative with a title. No. Oxford English: "Personal references are never acceptable." UIUC: "Personal letters of references (e.g. from family members) are not recommended."

Choosing three writers for an MS application

Constructed example: a B.Tech ECE applicant's roster

Constructed example, written by us, not a real applicant statement. Context (invented): "Rohan Iyer" finished a B.Tech in Electronics and Communication in 2026 and has worked for six months at a chip design company. He is applying to MS programs in electrical and computer engineering in the US. His options:

Why this roster works: two letters come from faculty who assessed his work, and the third from a recent employer, which matches CMU's "At least two letters should be from faculty or recent employers." For a thesis-based MS at UIUC, where the page recommends academic letters, Rohan would swap Ms. Das for a second professor who supervised him, if he has one. The HoD adds nothing the transcript does not already show.

Our sibling page on a letter from a research internship supervisor covers the internship case. For employer letters in general, see employer letters of recommendation for grad school.

How to decide in five questions

1. Did this person assess your work, not just your marks? If no, drop them.
2. Can they name a piece of your work and say what you did in it? If no, drop them.
3. Can they compare you with a group they can name and size? If yes, they rise.
4. Does your program require a type (academic, a thesis supervisor, a recent employer)? Fill that slot first.
5. Is the remaining choice between a senior title and a person with more contact? Choose contact.

Then ask for the letter the right way, and send your recommenders the LOR format and sample for MS and PhD recommenders. Our guide to letters of recommendation for grad school covers how many letters programs ask for. If a recommender wants feedback on their own draft, point them to the graduate recommendation letter review.

Questions about choosing an HoD or a professor

Is a LOR from the HoD better than one from a professor?

Only if the HoD knows your work as well. Stanford and CMU ask for people who know you and can evaluate your work; neither mentions rank.

Should I get a LOR from my college principal?

Not unless the principal taught or supervised you. A principal who did not knows your file, not your work, and the pages above ask for someone who assessed you.

Can my project guide write a LOR if they are an assistant professor?

Yes. Cambridge's test is "a credible judge of your abilities", and a faculty member who supervised your project meets it.

Can a retired professor write my LOR?

Oxford English accepts it in writing. Check your program's page, and make sure the professor can use an institutional email address if the program requires one. If your referee teaches at a Nigerian university, see the recommendation letter from a Nigerian lecturer for the testimonial-versus-reference difference.

For UK courses, the count and the years-out rules are in UK master's references: how many and who to ask.

EPFL accepts only professors; see ETH and EPFL letter rules.

Applying to an MSBA with work experience? The business analytics LOR sample shows a manager letter.

Writers worried about a low CGPA can read recommending a student with a low CGPA.

Get a free review of the letter

Get a free Quick Review of your recommendation letter against GradPilot's graduate recommendation letter rubric, written for faculty and supervisors recommending MS and PhD applicants. It reads for how the writer knows the candidate, incidents rather than adjectives, comparisons that name their group, and the strength of the endorsement. Send the link to the recommender you choose, with your request. For a letter going to programs outside the writer's country, choose the international academic recommendation rubric.

GradPilot's letter reviews aren't for a letter you drafted for a recommender to submit as their own. Your own statement should tell the same story about the same work; the master's SOP review covers it.

More guides:

• LOR sample for an MS in computer science: what a strong letter from your chosen professor looks like.
• Recommendation letter for a student you barely know: what a recommender with little contact can honestly write.
• Graduate school essays hub: all our master's and PhD guides.

Sources

Retrieved October 31, 2026.

• Stanford Graduate Admissions, Recommendations (no cycle stated): who to choose; sole-authorship rule.
• Carnegie Mellon School of Computer Science, Graduate admissions (no cycle stated): recommender selection, faculty or recent employers, smaller classes.
• UIUC Siebel School of Computing and Data Science, Applications process and requirements (no cycle stated): academic letters recommended; personal letters not recommended.
• University of Cambridge, References (no cycle stated): who a referee should be; academic referee examples; no PhD students.
• University of Warwick, Guide to providing academic references (no cycle stated): who should give an academic reference.
• University of Oxford Faculty of English, Graduate FAQ (no cycle stated): retired referees; personal references.
• University of Toronto MIE, Master of Engineering (no cycle stated): academic references from undergraduate instructors only.