German to English Art/Literary Education / Pedagogy description of an examination

I am working on a description of a new English language examination, and the current paragraph is explaining why the new exam has a monothematic approach. "Zu einem Oberthema werden unterschiedlichste Textsorten präsentiert, die wiederum das Oberthema sowohl sprachlich als auch inhaltlich auf sehr unterschiedliche Weise beleuchten." As far as I understand it, the various parts of the exam such as the reading and listening texts and the essay are all on one major theme. Thus several different texts may be about, say, Intelligence and the candidate also writes an essay on one or more aspects of the subject.
My difficulty in this sentence is with "beleuchten" as I am not sure whether it really just means "deal with" or whether I should try getting the "illuminating" aspect in as well. Any help would be much appreciated!