Abstract: Campus Quality of Service (QoS) concerns the transformation of current best-effort, single-class-of-service internets into systems that can offer one or more levels of preferred service to certain classes of users or applications. Choosing the "best" QoS will require making decisions about the relative costs of network capacity and the machinery to manage it. The principal concerns are recurring costs and network reliability. The paper discusses and suggests a strategy to have a cost-effective QoS in campus network infrastructure that can support multiple classes of service without introducing the complexity of per-session admission control. Such a network should be amenable to several different premium service policy models, e.g. charging per-port subscription and/or usage fees and/or support for differential queuing based on application need.