To understand what happens if you drop a class, look at it this way: Uncle Sam is paying you money to go to school and take classes; if you don't show up for classes he's going to come to you looking for that money. If you remember anything from your military service, you should remember that the government will get any money owed to them, and they will get it pretty fast. So, with this in mind, how can you drop that class you are failing and not end up owing money to the VA? For more details, see this Military.com article.