Junior/Senior Banquet at Mars Hill Bible School

My grandson's banquet his junior year of high school. This girl is just a friend. But isn't she pretty? The school has a nice banquet meal for the kids, then they go bowling, etc and end at one of the church buildings of one of the congregations and have a devo and then go home. Why can regular city/county high schools do this, instead of having a dance and the kids bringing their own booze. Every year some teen around here has an auto accident and gets killed. So sad when young people do not make the right choices.