Georgias story in the school paper caused changes in the study hall procedures adjective o adveb?

In this context, "adjective" is the correct term. The phrase "the school paper caused changes in the study hall procedures" describes a noun (the changes) with an adjective that characterizes the changes as being influenced by Georgia's story. Adverbs, on the other hand, modify verbs, adjectives, or other adverbs and are not applicable here.