I am finishing my Masters Degree this semester in Clinical Psychology and have decided to attempt to qualify for medical school. The only thing in life I can ever remember wanting to do was become a doctor but for various reasons I picked another path. Now I have decided to return to my first love so that when I am 50 I don't look back with regrets. I will have to take calculus, chemistry, and ,physics. I have also been advised to take genetics, and biochemistry. At the least it will be 2 years before I can apply. Does anyone have any information on the advantages/disadvantages of taking classes at different universities vs going to a school with a respecialization program such as Harvard Extension School?