This is good. I took the E&M course for electrical engineers at my university, a very well-regarded engineering school. I ha no idea what I was doing. After every exam, I thought I'd have to drop the course. One of my scores was a solid B, another was the third highest. I got a B because I didn't know how to do the homework. Literally the only thing I could do was get the sign and units right in the multiple choice answer.