Senior Year College Application Timeline: Class of 2027

If your student is starting senior year this month, here is the short version. The Common App opened on August 1, 2026. Early Decision and Early Action deadlines land on November 1 or November 15, 2026. Regular Decision deadlines are mostly January 1 or January 15, 2027. The 2027–28 FAFSA is scheduled to open by October 1, 2026, and the CSS Profile opens the same day.

The last fall test dates that will realistically reach an early deadline are the October 3 SAT and the October 17 ACT. If a score still needs to improve, those are the ones to build the fall around.

That is the whole calendar. The rest of this post is what goes in the gaps, because the deadlines are the easy part — every family knows November 1 is coming. What sinks applications is the eight unstructured weeks in front of it.

What is actually due this fall?

Working backward from the deadlines, here is the fall in order:

Two of these quietly cause most of the damage. The first is that registration deadlines run about three to five weeks ahead of the test, so a student who decides in late September to retake the October SAT has already missed it. The second is that the UC deadline is genuinely absolute — there is no Early Action, no Early Decision, and no rolling admission in the UC system, so November 30 is the only date that exists.

What changed on the Common App this year?

Less than the internet suggests. Common App confirmed in February 2026 that all seven essay prompts are unchanged for the 2026–27 cycle, and the personal statement is still 250 to 650 words.

That stability is worth exploiting. Because the prompts have barely moved since 2021, every guide, example essay, and counselor's advice from the last several cycles still applies — this is one of the few parts of admissions where old resources are not stale.

One useful piece of context from Common App's own reporting: the most-used prompt last cycle was Prompt 7, "topic of your choice," at roughly 28% of applicants, followed by the prompt about challenges and setbacks and the one about personal growth. Students often treat prompt selection as the hard creative decision. It mostly is not. Most strong essays would work under three or four of the prompts, and Prompt 7 exists precisely so the essay does not have to be reverse-engineered into a category. Write the essay, then pick the prompt it fits.

Does the Class of 2027 still need an SAT or ACT score?

For many schools, yes — and this reversed fast enough that a lot of advice still in circulation is wrong.

Six of the eight Ivies — Brown, Cornell, Dartmouth, Harvard, Penn, and Yale — require scores this cycle, along with MIT, Caltech, Stanford, Georgetown, UT Austin, and every public university in Florida. Georgia is more complicated than it is usually described: Georgia Tech and UGA require scores, but most other campuses in the University System of Georgia have been operating under a temporary test-optional waiver. The full picture, school by school, is in our guide to which colleges require the SAT or ACT.

But here is the nuance that most timeline posts get wrong, and it matters specifically for students applying right now: Columbia and Princeton are still test-optional for this cycle. Their announced requirements begin with the 2027–28 application cycle — students applying in fall 2027 for entry in fall 2028. A senior applying this November is in Princeton's final test-optional year. Vanderbilt's requirement starts later still, in 2028–29.

The University of California system runs the other direction: all nine undergraduate campuses remain test-blind, meaning a submitted score cannot help an admissions decision at all. UC's application instructions say scores are not considered for admissions decisions or scholarship awards, but may be used to satisfy minimum eligibility requirements or for course placement after enrolling — so submitting is not entirely pointless, it just does not affect whether a student gets in. That policy is under active review after the legal settlement that locked it in expired in 2025, but it holds for this cycle.

The practical takeaway: build the list first, then read each school's current policy off its own admissions page. "Test-optional" is now a per-school, per-year fact with a short shelf life, and a list from two years ago will actively mislead you.

When does financial aid open, and how much does timing matter?

The Department of Education has committed to launching the 2027–28 FAFSA by October 1, 2026. Given the last few years, treat that as a target rather than a promise, and have the paperwork ready to go the week it opens.

Filing early matters more than families expect, for a reason that has nothing to do with federal aid. Some state grant programs and a number of institutional aid pools are awarded first-come, first-served until the money is gone. The federal calculation does not change based on when you file; the state and institutional piece sometimes does.

The CSS Profile opens the same day and is a separate application, required by a few hundred mostly private colleges for their own institutional aid. It costs $25 for the first school and $16 for each additional one, with fee waivers that are generally automatic for families under roughly $100,000 in income. Deadlines are set by each college rather than centrally, which is exactly the kind of detail that gets missed.

A month-by-month plan for the gaps

The deadlines are public. The schedule that produces a finished application is not.

August (now). Lock the school list — roughly eight to twelve schools, honestly sorted into reach, target, and likely. Nothing else can be scheduled until this exists. Draft the personal statement. Ask for recommendation letters before teachers are buried; the first week of school is worth several weeks of goodwill later.

September. Personal statement goes to a second reader and comes back revised. Start supplemental essays, which are where the real volume hides — a twelve-school list can carry thirty or more supplements, and they are what actually blows up in October. Register for the October test.

October. Finish supplements for early schools. FAFSA and CSS Profile the week they open. Take the October test if a score is still in play. Early applications should be effectively done by October 25 — leaving a week of buffer, because portals do go down on November 1.

November. Submit early applications. Then, without pausing, finish the UC application by November 30 and push Regular Decision material forward while the essays are still warm.

December and January. Regular Decision submissions, plus mid-year grade reports. Senior grades still count, and this is the month students stop believing that.

The part of the timeline nobody schedules

Every plan above assumes something that usually is not true: that a student who sits down to write a supplemental essay actually writes it.

The fall of senior year is an unusually bad pairing — long unstructured tasks with no external accountability, running for months, on the same device that holds every social app the student owns. An essay is precisely the kind of work that loses to a feed, because it is effortful, the reward is months away, and the phone's reward is immediate.

A few things that help more than another planner:

None of that is a substitute for starting early. It is what makes starting early survive contact with October.

What to do this week

If you only do one thing after reading this: confirm which of your student's schools require a test score this cycle, reading it off each school's own admissions page rather than a list, and check whether the October test dates still fit. Those two facts determine whether the fall is calm or frantic, and both have registration deadlines in September that do not move.

Then make the list. Everything else on this calendar depends on it.