While a high school diploma is the minimum prerequisite for most training programs, the limited number of spaces in a program makes admission more competitive. Obtaining the certified nursing assistant certification makes your application more competitive because you have prior training and experience in the field.
Community colleges and trade schools are adding more night classes because of their unique student base. Competition for night classes can be high because many students of vocational courses work during the day.
There are not major differences between the curriculum of a day class and a night class. This is mostly because all LPN schools must be approved through the respective state's board of nursing (see Reference 4), and all candidates still must NCLEX exam.
Night classes can be more difficult than day classes depending on the schedule of the classes. Because the curriculum is basically the same between a night and a day class, the night class has to learn everything the day class does in a condensed time period. This creates a heavier work load and a harder class.
While you may be taking night classes, all LPN certifications require a clinical experience. Schools will usually try to work around your schedule, however, there is the possibility that you will have to take off work or change you work schedule to accommodate your clinical schedule.