I graduated from school two years ago and I am planning on taking a course on electrodynamics this coming semester for personal interest. However, I am having problems registering for the class. I haven't strictly met the course's prerequisites. I meet the math side of things, but the course requires I take a general mechanics class first. The problem is, I don't want to waste my time. I have studied physics independently for years, and my knowledge of mechanics is as solid as I need for the electrodynamics class. I know all about force, momentum, energy, work, springs, rotation, and oscillations. It's not what I'm interested in, and it would all be tedious review. But since my studies have all been outside of school, I have no way of proving my ability to study the material. I talked to the department head today, and they told me there was no other way than to go through the school's track and no possibility of a placing out or getting an override from a professor. Luckily for me, the reason I have any ability at all in physics is because I'm stubborn, and refuse to admit defeat. I'm trying to come up with alternative ways to get into the class. My first thought was that I might talk to the professor anyway, but from the look of it, the department head IS the professor, so that is questionable. I also had the idea of writing out a formal letter, fully explaining the depth of my studies, which I could not convey over the phone. The reason I'm posting here today is because I'd like input from people who have been in this situation before. What can I do to convince the department head to allow me to enroll?