Good for you in coming up with a solution so quickly. I like how you call it enrollment fee as opposed to deposit which implies you will get it back later no matter what. Asking for 2 weeks upfront can be a big deal to some families but telling them they will get it back their last two weeks gives them peace of mind, and wrongly I kind of used it as a selling point. I wish I had used your idea sooner, it would have avoided some clients I had over the years.