Role Based Access Control (RBAC) is the process of being able to assign a specific security policy to users or groups of users that connect to the network. School wireless networks, hospital wireless networks and even enterprises should use Role Based Access Control to solve wireless security concerns.
When a user logs onto the wireless network, the system assign a Security Policy to them based upon their login credentials. If it is an employee computer, the Security Policy will assign them under the "Employee" user access group, giving them access to specific network features that have already been preassigned (such as email server, web gateway and a limited set of internal servers). Same goes for hospitals -- if the user trying to connect is on the guest wifi and is a patient, they will be automatically assigned specific access to the internet or other allowed features. Many wireless networks do not automatically do this.
Check out our Whiteboard Wednesday with SecurEdge VP of Engineering Michael McNamee to learn more about Role Based Access Control: