Just as learning your best classes will help the interviewer understand your areas of strength; learning of your areas of weakness will help the interviewer to see where they may need to offer additional support and training. Having areas of weakness is okay. Don't put yourself down; rather discuss how you are planning to improve your skills in that area.
"I struggled a lot with my Spanish classes. I am more of a numbers person and am not naturally inclined to linguistics."
"The one subject that was a challenge for me was Statistics. I am not a numbers person, and although I like data analysis, it does not come naturally to me. My strengths are more geared to communication."
"Politics have never really been my thing. I think because it is ever-changing and unpredictable; I found it to be a touch overwhelming and frustrating at times. My strength is more in math where one cannot argue the results, and everything is more cut and dry."
"Media Studies was a bit of a struggle for me because I have a deeper interest in other topics such as design and digital performance. Overall, I did fine and received a strong grade, but it was not my favorite experience."
"Math has always been a tough subject for me, including my time in high school. I love people, socializing, and communicating. Math is rigid for me. With that said, if there is a math concept that I do not understand I will watch an online tutorial to refresh my knowledge."
"Sales is a highly communicative career path, so my strengths have always been in subjects related to social issues, economics, and psychology. I could be stronger in subjects such as math and statistics. I have a couple of apps on my phone to help me develop that side of my brain."
"I love to write, and feel that I am a strong writer; however, I did struggle a bit in one of my fictional writing courses. It challenged my creative thinking and pulled me out of my usual thinking habits. As much of a challenge as it was, I still quite enjoyed it."