If interested, you may want to ask his teacher, but I think D took AP Physics 1 sophomore year (and test), then only AP Physics C Elec/Magnetism junior year but was able to apply that knowledge to take both AP Physics C Elec/Magnetism AND AP Physics C Mechanical. I was nervous about this plan, but it worked for her. AP Physics C-Mechanical was not offered at her school. She said it would probably not have worked the other way around–to take only Mechanical and not Elec/Magnetism. She plans to be a Physics major in college and had a great teacher. Just throwing out an idea, certainly depends on the student/teacher, etc. She was in Calc BC while taking Physics C Elec/Magnetism…and enjoys math.