While kids DO have to learn to be independent and make sure they show up at the dining hall when it’s open, do laundry, etc. - there tend to be a lot of adults (and older students) around to help in that process. The schools admit kids they see have the temperament to do this but that doesn’t mean they all show up having it all down!
There are a lot of things that are good about BS and one of them is that it is a much gentler and better supported on ramp to independence than going from home to college (which most students negotiate just fine too!)