Wherever you go to school, there’s bound to be those notable, extremely difficult classes that many majors end up having to take. These classes can bring your GPA down, be unorganized, or simply not at the depth you want to learn the material at. Whatever your reason is, for many of these popular and commonly-taken classes (often prerequisites, but upper-levels are also usually included) you will have options to take these classes elsewhere and fulfill the requirement required by your institution.
Physicist Richard Feynman is credited with the creation of the Feynman technique. It revolves around explaining a concept in simple language as if you were teaching it to someone else.
My personal experience at CUNY- Hunter College located at 695 Park Avenue, New York, NY.