Actually, an ALL A student for STANFORD med school is almost a must. You may have a B in non required science classes, otherwise your hope for STANFORD med school is mostly dashed, unless you are hooked. I say this because I have inside information about the school. My friend work for the med school, she has not seen any GPA lower than 3.95 and mostly 4.0 students under her review.
You have to ignore those published GPAs about STANFORD med school.