Maybe confusion to distinguish between levels of study or levels of knowledge practiced. Two decades ago, the community colleges had Electronics courses for vocational programs. Student could study AC and DC current and circuits and whatever else goes with those topics, and LABORATORY instruction and exercises. Such courses are no longer common, and in fact, very few community colleges offer these courses. Instead, you need to be an Engineering student at a university and have your "circuits" course as one of your first Electronics, and then there is the focus on digitial electronics and you can no longer study about resistors, capacitors, potentiometers, transformers as you were able to at a cc so many years ago.