The common app additional information section confuses more students than the personal essay does, mostly because nobody tells them it's optional until after they've already stressed over what to write. This guide covers what the section is actually for, when to use it, what to leave out, how long it should be, and how to write an entry that helps your application instead of padding it.
What Is the Additional Information Section?
Common app essay vs additional information section is the first distinction worth making, since students often treat the two as interchangeable. They're not. The personal essay tells a story about who you are. The additional information section explains a fact that changes how an admissions officer should read the rest of your application.
| Section | Purpose | Typical Length |
|---|---|---|
| Personal essay | Tell a specific story that reveals who you are | A full essay |
| Activities list | Show what you did, with brief descriptions | A few lines per activity |
| Additional information | Explain a fact or circumstance that needs context | A paragraph or two, at most |
The additional information section isn't a second chance at the essay, and it isn't required. It exists for the students who genuinely need it, not for every applicant to fill out of habit.
When Should You Use the Additional Information Section?
What to put in the common app additional information section comes down to one question: is there something factual an admissions officer needs to know that isn't clear anywhere else in your application? Real reasons to use it include a grade drop tied to a specific circumstance, a gap in your course schedule, a family responsibility that affected your extracurricular time, or a short addendum to something your activities list couldn't fully explain.
If nothing on that list applies to you, leaving the section blank is the right call. A blank additional information section is not a weaker application. It's a normal one.
What NOT to Put in the Additional Information Section
What not to include in additional information section matters just as much as what belongs there. Three things reliably weaken this section instead of helping it:
- Restating your resume. If it's already in your activities list, repeating it here adds nothing new.
- Rehashing your personal essay. A shorter version of the same story reads as filler, not context.
- Extra activities that didn't fit elsewhere. If your activities list ran out of room, that's a sign to cut, not a reason to continue the list somewhere else.
Admissions officers read this section looking for something they don't already have. Give them that, or don't fill it out at all.
How Long Should It Be?
Shorter than most students assume. A paragraph or two is usually enough to explain a specific circumstance, not a full page and not another essay's worth of writing. The exact character limit has shifted across past application cycles, so check the current Common App portal directly before you start writing rather than relying on a number from a previous year.
Length isn't the goal here. A clear, factual paragraph that explains one thing does more than a longer entry that tries to cover several unrelated points at once.
How to Write a Strong Additional Information Entry
- Identify the one fact that needs explaining. Not a general impression, a specific circumstance an admissions officer wouldn't otherwise know.
- State it plainly in the first sentence. Don't build up to it. Lead with the fact.
- Add only the context that fact actually needs. Skip background details that don't change how the fact should be read.
- Cut anything that sounds like a second essay. If you're building toward a narrative arc, that belongs in the personal essay, not here.
- Read it back and ask what it adds. If the answer is "context an admissions officer needs," keep it. If the answer is "more content," cut it.
If you're also working on your personal essay at the same time, our guide to Ivy League essays covers how to build a stronger central narrative there.
Does a Research Project Belong in the Additional Information Section?
Sometimes, but usually only as an addendum, not a full description. If your activities list already names the project and describes it clearly, repeating it here adds nothing. Where the additional information section actually helps is when a research project needs context your activities list can't hold: an interrupted timeline, a link to a published paper or abstract, or an independent project that didn't come with a formal program name to reference.
A finished research project with your name on it, something you can describe in a specific, factual way rather than a vague summary, is what actually reads as credible to an admissions officer. If you haven't started one yet, our guide to how to start a research project in high school walks through the process, and the Aspire Research Fellowship pairs you with a PhD-level mentor and a recent ISEF champion over 12 weeks to help you finish one. Over 20,000 students have gone through the program, with an acceptance rate of roughly 10%, open to grades 8 through 11.
Common Mistakes Students Make
Filling it out because it's there, not because they need it. An empty additional information section is a normal, complete application.
Using it to list activities that didn't fit elsewhere. That's a sign to cut your activities list, not extend it into a new section.
Writing a second personal essay instead of a factual explanation. The National Association for College Admission Counseling publishes guidance on application components worth checking directly if you're unsure where a specific detail belongs.
For students still finalizing their activities list before touching this section, our guide to common app activities covers how to prioritize what goes there first.
Frequently Asked Questions
What is the common app additional information section for?
The additional information section is a free-text box for context that doesn't fit anywhere else on the application, extenuating circumstances, a gap in coursework, or an addendum to something mentioned in your activities list. It's not a second essay and not a place to repeat your resume.
Do you need to fill out the additional information section?
No. Leaving it blank is completely normal and doesn't hurt your application. It exists for students who have something specific that needs explaining, not as a required extra credit section.
How long should the additional information section be?
Shorter than most students assume, a paragraph or two, not another full essay. The exact character limit has changed across past application cycles, so check the current Common App portal directly before you start writing.
What should you not put in the additional information section?
Don't restate your resume, rehash your personal essay in different words, or list extra activities that didn't fit in the activities section. Admissions officers read it looking for context, not more content.
Can you put a research project in the additional information section?
Sometimes, if it needs context your activities list can't hold, like an interrupted timeline, a link to a published paper, or an explanation of an independent project with no formal program name attached. If the activities section already covers it clearly, don't repeat it here.
What's the difference between the additional information section and the personal essay?
The personal essay is meant to show who you are through a specific story. The additional information section is meant to explain something factual that affects how the rest of your application should be read, like a schedule change, a family circumstance, or a testing gap.
Does every applicant need something in this section?
No. Most strong applications leave it blank, because most students don't have circumstances that need separate explanation. Filling it in just to fill it in usually weakens an application rather than strengthening it.
Can colleges see what you write in the additional information section?
Yes. It's submitted as part of your full application and read by the same admissions officers reviewing everything else, so treat it with the same care as any other required section.
The Bottom Line
The common app additional information section is one of the few parts of the application where less is genuinely more. Use it when you have a specific fact that needs explaining, skip it when you don't, and never treat it as required filler. A blank box here is not a missed opportunity. It's a sign the rest of your application already said what it needed to.
If your interest is building something concrete to reference in this section or anywhere else on your application, the Aspire Research Fellowship pairs you with a PhD-level mentor and a recent ISEF champion over 12 weeks. Over 20,000 students have gone through the program, with an acceptance rate of roughly 10%, open to grades 8 through 11.
Apply to the Aspire Research Fellowship →
For help with the rest of your application, see our guide to common app activities.