If anesthesiology, for an MD student what's an acceptable Step 2 score for a low and mid-tier academic program? Ie does this have to be ~250 to compensate?
Probably a good question to ask one's school advisor who has had students in the situation and can give recommendations. One important note again is that step scores are never the only aspect of one's application.
Here are some useful links:
Program director survey (Page 9) is anesthesia: I'm not able to post links for some reason but google this: nrmp residency program director survey (It's the first link)
Charting Outcomes (there is a section just for anesthesia): I'm not able to post links but google this: nrmp residency charting outcomes 2018
The Average step 1 and step 2 scores for people who matched into anesthesia was: 232 and 242 respectively
HOWEVER, fo for Step 1 scores 210-220,, 130 matched into a program and 5 didn't.
There is also a lot of other helpful information there as well.
FINAL point, remember that if you are starting 3rd year and had a subpar step 1, make up for it by improving other aspects of your application whether that is research, community service, volunteer search, good clinical grades, a good step 2, etc.