Maybe I can help shed some light.
There are basically two different types of LV/PN programs. One type is based on college hours and it is based in a Community College. College hour programs tend to be longer in length - ~ 12 - 18 months. These programs may have a variety of pre-requisite classes that you need to take such as English, math, etc. The other type of program is called a "clock hour" program and these may be as short as 9 months. In these, the whole group of students go through the entire program together, and the pre-requisites may just be integrated in to the program rather than taking them separately. Both types of programs have to cover the same topics and have the same number of "clinical" hours, but their approach is different. The advantage to college hour programs is that some of the courses will be transferable if you decide to continue with your education.
LV/PN programs do not require the heavy-duty science curricula that is required in RN programs. Anatomy and physiology, nutrition, math, etc. is very basic. Microbiology, chemistry, and psychology is usually not required.
One class that will be very helpful in an LV/PN program is Medical Terminology
. You can obtain this at many community colleges.
FYI, nursing is a completely different profession than medicine. Only
physicians practice medicine -- nurses practice nursing. All the other professions (Radiology, physical therapy, respiratory therapy, laboratory science, etc.) are categorized as "allied health professions". The industry is called "health care", not medicine