Program signals, explained in plain English

Dear Applicant,

Signals are the scarcest currency in your application. Every participating specialty gives you a fixed number, it is easy to spend them on vibes, and a peer-reviewed study co-authored by AAMC researchers found that sending a signal raised the chance of an interview invitation in all three specialties it examined: dermatology, general surgery, and internal medicine. It is one of the few levers every applicant still holds in September.

A signal tells a program "you are one of my genuine top choices" at the moment applications open. Programs use them to sort the pile. The same study found programs vary widely in how much weight they give a signal, and a signal never guarantees an interview.

It is not a magic ticket. A signal to a program that has never interviewed anyone with your profile does not change your profile. It just spends the coin.

For each signal, write one sentence: "This program plausibly interviews someone with my scores, my school, my geography, and my story because ___." If the sentence is about loving their city, that is a lottery ticket, not a signal. Your school's advising office has last cycle's outcomes. Ask for them before you spend anything.

It varies by specialty, and several specialties now split signals into gold and silver tiers (anesthesiology, for example, gets 5 gold and 10 silver this cycle; orthopedic surgery gets a flat 30). Check your specialty's count in the AAMC's 2027 signaling table before you build your list.

Spread beats stacking. A common shape: a small number on true reaches you have a real story for, most in the middle where your profile matches their history, and one or two on programs you would happily attend where you clear their bar comfortably. Then submit and stop touching it.