Methods, systems, and apparatus, including computer programs encoded on computer storage media, for prioritizing content classification categories. One of the methods includes maintaining two or more content categories including a first content category and a second content category, each content category having an associated score, receiving, from a user device, a request to access a resource, the resource being associated both with the first content category and with the second content category, determining a content access policy for the user device to the resource based on the respective scores associated with the first and second content categories, and selectively permitting or denying access to the resource by the user device depending on the determined content access policy.