The med school admission rate tells almost nothing about how good a job the college does in preparing its students to apply to med school. Some schools boast admirable rates but it boils down to one of two things. Either they start with great students (think Stanford, Dartmouth, etc) or the school weeds out students.
Premed weeding can be done with introductory math/science courses with a tough curve, ensuring only the best students still think of themselves in the running after a few semesters. But the biggest club is the “committee letter”. Why does the letter have such power? If your college supplies such a letter then med schools either require you to submit it or will be suspicious if you don’t. As Swarthmore writes
All you really need to know is in this chart: https://www.aamc.org/download/321508/data/factstablea23.pdf Let me write the committee letters and I could get any college in the country a 80% rate.
Also based on outdated information. Perhaps 10-15 years ago med schools really favored research. Today its just another factor and will not replace experience in a health-care setting (volunteer or paid). This is an unofficial requirement and you will not be accepted without it. Spend some time reading thru the handbook at https://www.rhodes.edu/sites/default/files/PreMed_Essentials.pdf