When a T20 says an essay is “optional,” should you actually write it leave it blank?
“Optional” is a rule. It is not a strategy.
When a highly selective college marks an essay optional, the application really may allow you to leave it blank. The strategic question is different: would a strong response add useful evidence that the rest of your file does not already contain?
The wrong rule is “T20 = write every optional essay.” That can produce redundant, thin, or hurried writing. The better rule is to measure the information gain of the response against its cost in time, quality, and repetition.
Not every “optional” field sends the same signal.
Two current examples show why applicants should stop treating the word optional as a secret code.
Duke
Duke has required writing and then invites applicants to answer one optional question if the answer would add something meaningful that is not already addressed elsewhere. That is a direct instruction to optimize for new evidence—not mere completion.
WRITE IF ADDITIVENorthwestern
Northwestern allows 0–2 optional short answers, encourages at least one, and explicitly says answering more optional questions does not add extra weight. It also makes the Common App personal essay optional because its own supplement already includes required writing.
QUALITY > COUNTCommon App fields
Context boxes such as Additional Information are optional for a different reason: many students simply have nothing that needs explaining there. Manufacturing content to avoid a blank box can reduce clarity.
USE ONLY IF NEEDEDAlways read the live wording for your cycle. Current policy examples: Duke Undergraduate Admissions and Northwestern Undergraduate Admissions.
Before you write, ask what the essay can prove.
A useful optional essay changes the reader’s model of you. If deleting it would not change what the reader understands, the essay may not be doing enough.
Does it reveal a dimension that is not already obvious?
Maybe your application is academically dense but says little about how you interact with people. Maybe your activities show what you built but not the curiosity that drives it. Optional writing is most valuable when it fills a real interpretive gap.
Could this response belong only to you?
Generic enthusiasm, broad values, and a second version of your résumé rarely justify another essay. A specific scene, way of thinking, relationship, habit, tension, obsession, or contribution can.
Is the prompt asking for something the college values?
If a school asks about dialogue, community, intellectual life, or lived experience, the prompt indicates what it hopes to learn. Answer the actual question. Do not turn every optional response into an additional “Why Us?” essay unless that is what the prompt requests.
Will the optional essay be as polished as the required ones?
An optional response written at 1:30 a.m. because “you are supposed to do all of them” can introduce weaker writing than the rest of the file. At highly selective colleges, extra material should clear a quality threshold—not simply exist.
What are you not improving while you write this?
There is a point at which an eighth marginal essay is less valuable than revising the main essay, clarifying Activities descriptions, researching a required school-specific response, or catching factual errors before submission.
Is “optional” truly universal for your application path?
Some writing or supplements populate only after you select a school, major, scholarship, special program, or application pathway. A field that is optional for one applicant can be required—or strategically central—for another. Recheck after every program selection.
Should you actually write it?
Score the draft you could realistically produce—not the perfect essay you imagine writing.
Blank is not automatically a mistake.
The college says the material is genuinely optional and your existing application already gives a complete picture.
Your only available topic repeats a required essay, personal statement, Activities entry, or another supplement almost point-for-point.
The field is designed for context you simply do not have—for example, an Additional Information explanation with nothing that needs clarification.
A rushed optional essay would be materially weaker than the rest of your writing and you can use the time to improve required work.
The response changes the file.
You have a strong, non-duplicative story or idea that directly answers what the college is trying to learn.
The rest of the application leaves an important dimension underdeveloped—intellectual energy, community behavior, perspective, personality, or another relevant trait.
The school explicitly encourages applicants to answer, and you have a substantive answer rather than filler.
The optional prompt is unusually well matched to one of your strongest experiences and lets you show something difficult to communicate elsewhere.
A useful editing test: read the full application without the optional essay. Write one sentence describing what the reader still does not know. If your optional response supplies that missing sentence with vivid evidence, it probably has a job.
