@chai2,
If I may, perhaps I could expand on what vacation bible school is (or should be)
The school part comes from the fact that it is a form of schooling (usually religious content) for children that includes games, crafts, bible stories, singing and other forms of fun and recreation. At least that is what our is.
The vacation part of it would refer to the fact that it occurs during school summer vacation. Some parents could look at it that it is a vacation for them since it usually lasts about a week. For some children, it may be the only time away from the family that they have in a summer.
I understand that some churches actually charge a fee for this. We do not and everything, including meals and snacks, is provided. After all, it is about the children.