My worst subjects in school were math and Social Studies. I never could grasp how the US Government works and I never was very good with US History, either.
Math in High school was ok, but I failed the math college entrance exam and had to start from Math 099. Being a computer science major, which involved a lot of advanced math classes, that kept me a bit behind, trying to catch up. I had to take Statistics 310 3 times before I passed. Ack.