<p>Last year I was in position of choosing between Math 125 and Math 126 as well. Really, it’s a personal decision to move up or down. I got a 5 on the AP Calc AB test and chose to stick with Math 125.</p>
<p>I will admit at the beginning Math 125 was very easy–we defined functions, domains and ranges on the first day of class. The first midterm doesn’t even cover derivatives. However, by the end of the class we finished with U substitution and L’Hospital.</p>
<p>Now I’m in Math 126 and I think I would’ve been fine starting with this class if I had been diligent and brushed up on basic integrals on my own. However, this is easier said than done 
I don’t regret taking Math 125 one bit though because it was an good GPA booster, a nice high school to college transition class, and I became very comfortable with Calc.</p>
<p>I will say though, I am a very strong Math student and I know some of my peers who got 4’s on the AB test struggled with the class.</p>
<p>My advice, evaluate yourself honestly. If you’re strong in math and have the discipline to review the Calc I concepts if necessary, then Math 126 could be an option. If math wasn’t your best subject and you’re unlikely to review on your own, it might be a good idea to do Math 125.</p>