Those of the Founders' generation who got a good education learned Latin and Greek. Those who studied for the ministry, like Madison, also learned Hebrew. Truly there were giants in those days! Classical educations are still available at a number of small liberal arts colleges in Ohio, Oregon, Illinois and New York, with St. John's on Long Island being the gold standard. The problem is, what do you do with that degree once you have it? Who will hire you and for what?
Reading classical history is a plus. Thanks to the Penguin Edition, you can get Livy, Tacitus, Herodotus and Xenophon translated into English. They're all worth a read. "Billthedrill" and I have had many a good chuckle at Livy, who quotes huge speeches by famous men that he was never alive to hear.