What factors determine whether or not one gets into YSPA and when are the results released?

The program in the question above that I’m referring to is the Yale Summer Program in Astrophysics.

i think teacher recommendations and the essays are a biggie, but i’m not sure about anything else. probably ecs too lmao rip me. don’t quote me on any of that.

last year, some acceptance decisions were released earlier – april 2nd.
i think ALL decisions are released april 7th