@JBStillFlying around 10-15 (Same as this year) applied EA last year, and the one EA accepted had legacy through her aunt & uncle (she also had great stats, I’m sure). No one switched to ED II, and 4 others were accepted in the RD pool (~30-40 RD applicants from my school). I go to a magnet public high school in the East Coast, so we usually have ~5 UChicago acceptances per year.