For example you might have had students from a particular business for years and then they suddenly stop enrolling one year. Or maybe a school was an excellent feeder for years and then started to tail off. The answer could be coffee!
The schools issue is not so common with most providers as they often have a dedicated schools liaison person. And that fact indicates the problem with the former. You see if no one is tasked with keeping in touch with current customers they soon get forgotten. It isn’t enough to think that your courses are great and they will keep on coming. All it takes is for a competitor to appear and woo them away from you.
But if you keep in touch with them on a regular basis then they are far less likely to disappear. Ideally you should be sending them some useful snippets of info, or some top tips relevant to them, on a regular basis.