Is there a standard minimum notice period I need to give my recommender before asking for an LOR, or does it vary by school?
No, there is no single universal minimum notice period for requesting an LOR, since guidance differs by school. Stanford's Academic Advising office suggests giving recommenders roughly three to four weeks, while UC Berkeley's EECS department advises reaching out at least three months before your deadline.
You should not assume a fixed number of weeks applies everywhere when asking someone to write your LOR. Different schools publish very different guidance, so checking your specific program's expectation matters more than following a generic rule you saw somewhere online.
How Much Lead Time Different Schools Recommend
| Institution | Recommended Notice Before Deadline |
|---|---|
| Stanford Academic Advising | About three to four weeks |
| UC Berkeley EECS department | At least three months |
Why Giving More Time Always Helps
Recommenders are usually writing for several students at once, especially during peak application season, so a longer runway lets them produce a thoughtful, specific letter rather than a rushed one. Even where a program only asks for a few weeks, approaching your recommender earlier rarely hurts your outcome.
My Advice
Aim for at least two months of notice regardless of what any single school's minimum suggests, and share your resume, target programs, and a few talking points upfront. This gives your recommender everything they need to write a letter that sounds personal rather than generic.
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