I had an evolution passage on my mcat, it was very basic though.
I'd agree with others though, if you're genuinely interested in it I'd take it. Looking back, my high school and college exposure to evolution was very minimal. Like others on here, I live in the south and my high school teacher made it a priority to stress that she was teaching "microevolution" and not "macroevolution," leading us to think there was actually a difference. Most of what I know about evolution now is from casual reading, so I really wish I'd taken a class on it when I had the opportunity.