Reference guide
The application calendar, worked backwards
Early, regular, and the December deferral wave — what is still possible from where you are standing.
Start from the earliest date on your list
The calendar is not built forwards from today. Find the earliest deadline among the colleges you are actually applying to, then work back from it: essays before the deadline, recommenders before the essays, and the conversation with your counselor before any of it.
Most early rounds close on November 1. Most regular rounds close between January 1 and January 15. Some colleges have no dated round at all because they admit on a rolling basis, which means applying early still helps even though nothing forces it.
What the rounds commit you to
Early Decision is binding. Apply to one college this way and, if admitted, you withdraw everywhere else. It is the strongest signal you can send and the least room you leave yourself, so it only makes sense when the college is a clear first choice and the likely cost already works.
Early Action is not binding: apply early, hear early, decide in the spring. Restrictive or Single-Choice Early Action sits between the two, letting you apply early to one private college without committing to attend.
Regular Decision carries no restriction. Applying in the regular round is not a weaker application; it is a later one.
December, and what a deferral means
Mid-December brings the early results. Whether a college mostly defers or mostly denies is one of the sharpest differences between them, so read your own colleges rather than a rule: some move nearly everybody they do not admit into the regular round, others deny outright. A deferral moves your application into the regular round, where it is read again against a much larger pool.
It is worth a short letter of continued interest if the college accepts one, updated grades, and any genuinely new achievement. It is not worth rebuilding the application around it.
The useful work in late December is the rest of the list: the regular-round essays, the colleges added after the early result, and the aid forms. Your application plan holds the rounds, the requirements and the dates for every saved college, and your financial aid plan tracks the FAFSA and college forms alongside them.