> Medical schools can accept students straight out of high school, as long as they've completed the required pre-medical coursework. They don't, however, because those students drastically underperform their peers who received an undergraduate degree in a different field.

I guess all those Australian medical schools will be interested in hearing how their graduates "drastically underperform" all these American doctors who did a postgraduate medical school.

http://www.med.monash.edu.au/medicine/admissions/direct-entr... - Bachelor of Medicine, a 5 year undergraduate degree with direct entry from school, and the 5th year being clinical rotations.

Seems to work well enough, to me, as someone who has used physicians extensively in both countries, and worked in healthcare in both. "drastically underperforming" doesn't really fit that picture.