Who’s liable for a teenager's bad behavior on a chartered bus trip?

Abstract

Public and private schools, and youth organizations of every kind, arrange day and overnight trips for the teenagers in their care. Many of these trips are by chartered bus. Offering these outings may expose the organization to liability when one teenager acts sexually inappropriately with another teenager. To avoid liability, what is the standard of care that must be provided by the organization? Where do chaperones fit in?