This is what I learned at university, too. But this read of The Revelation of John of Patmos is all too often tossed aside for the Left Behind school of thought that says the book is a road map to the Rapture and Apocalypse which will happen any day now (we promise, really, this time we have the maths right).
Read the rest of this piece, if you're curious. It's a review of a new book that takes a harder look at Revelations and especially the cultural context in which it was written. The author comes to the conclusion that the book is essentially an attack on Christianity-as-it-was back in roughly 100 C.E.
Elaine Pagels on the Book of Revelation : The New Yorker
Pagels then shows that Revelation, far from being meant as a hallucinatory prophecy, is actually a coded account of events that were happening at the time John was writing. It’s essentially a political cartoon about the crisis in the Jesus movement in the late first century, with Jerusalem fallen and the Temple destroyed and the Saviour, despite his promises, still not back. All the imagery of the rapt and the raptured and the rest that the “Left Behind” books have made a staple for fundamentalist Christians represents contemporary people and events, and was well understood in those terms by the original audience. Revelation is really like one of those old-fashioned editorial drawings where Labor is a pair of overalls and a hammer, and Capital a bag of money in a tuxedo and top hat, and Economic Justice a woman in flowing robes, with a worried look. “When John says that ‘the beast that I saw was like a leopard, its feet were like a bear’s and its mouth was like a lion’s mouth,’ he revises Daniel’s vision to picture Rome as the worst empire of all,” Pagels writes. “When he says that the beast’s seven heads are ‘seven kings,’ John probably means the Roman emperors who ruled from the time of Augustus until his own time.” As for the creepy 666, the “number of the beast,” the original text adds, helpfully, “Let anyone with understanding calculate the number of the beast, for it is the number of a person.” This almost certainly refers—by way of Gematria, the Jewish numerological system—to the contemporary Emperor Nero. Even John’s vision of a great mountain exploding is a topical reference to the recent eruption of Vesuvius, in C.E. 79. Revelation is a highly colored picture of the present, not a prophecy of the future.