I have taught medical students for 30 years.
As you might imagine, I’ve seen hundreds of fast-trackers.
It’s almost always a mistake. I can count on the fingers of one hand the exceptions.
They do exist, but it’s very, very rare.
I agree that you might likely find problems with "fast trackers" in medical school. Making a decision to become a physician or surgeon narrows one's options considerably, and doing this at a young age may cause resentment if that decision was based upon an immature idea of what medicine entails.
Our philosophy regarding our homeschoolers was to give them the very best and broadest education possible, so that as adults they would have the best foundation for pursuing their career goals. We believe that our children's university education was far superior in providing that broad foundation that anything any high school could provide ( private or government).
Even though our youngest has a B.S. in mathematics, she is now completing the requirements for a degree in nursing. Believe me, she is far better prepared for her basic courses in nursing that are her fellow students who only have a high school diploma. The courses are easy for my daughter.
The middle child earned a masters in mathematics by the age of 20. She did teach math for one year in a Catholic K-8 private school. She is now a wife and mother of 2 preschoolers. I suspect that in time she will study finance. Her foundation for having success in that field is **excellent**. More important, though, is she is well prepared to be wife and mother to her children.
The oldest studied accounting in the evening at a local college. He is a highly ranked athlete. He has traveled all over the world representing the U.S. in his sport. He also took a few years off as a later teen to work for our church in Eastern Europe, and came home completely fluent in Russian. He recently retired from competing. He will soon finish an M.B.A. in accounting at an age that is typical for students who have gone to government high school and attended college full-time. My son's rich and varied life experiences will serve him well in his business career and in his personal life.
If my son had attended high school it would have been impossible for him to have traveled as widely as he did, learned Russian fluently in Eastern Europe, had as much work experiences and responsibilities, and had as many richly rewarding international friendships.