What's the adjective for classwide? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs class and classify which may be used as adjectives within certain contexts.
classified
Formally assigned by a government to one of several levels of sensitivity, usually (in English) top secret, secret, confidential, and, in some countries, restricted; thereby making disclosure to unauthorized persons illegal.
Not meant to be disclosed by a person or organization.