It is appalling that any teachers would feel that Shakespeare's marvelously written works should be revised to Modern simplistic English! If this is done, then why not rewrite the Constitution of the United States, and any other works written in older forms of English?
Things are being dumbed down enough, are they not? As the previous poster has so cogently remarked, the beauty of the prose would be destroyed if the Bard's plays were "revised." Shakespeare wrote in the language of his own time that even the groundlings understood, so how difficult could it have been? If Americans were not so obtuse about learning foreign languages as children, they would better comprehend older forms of English which resemble the ancestral French and Saxon languages. [I once had a German foreign exchange student who said that Chaucer was easy for her to read as it resembled older German.] To read Shakespeare in its original form is imperative in order to appreciate the iambic pentameter, the figurative language, the personalities of the characters, the depth of thought, the absolute beauty of the language.
Besides, there are parallel texts provided for students so that they can refer to the modern meanings of words. Here at enotes the etexts of the plays contain on one side the original and on the other the Modern English version. Certainly, for those for whom English is a second or third language, this modern text is helpful. But, please let us not eradicate the history of the English language that is preserved in the magnificent writings of such greats as Chaucer and Shakespeare just for those not proficient in English.