I have to read Romeo and Juliet and that book is really bad. Seriously, it sucks and it's hard to understand. . I also had to read A Raisin in the Sun and that book was better because of the funny accents and it was shorter and easy to understand. We also had to read some (about 50 pages) of the Oddysey, and that book was alright, at least it was easy to understand.
Romeo and Juliet is far from Shakespeare's best work, but most of it isn't that bad. The writing at the end was rather poor, but keep in mind that was only one of the alternate endings. This was one play Shakespeare wrote so that it could be either a tragedy or comedy depending on which final scene was chosen for a particular performance. His company would alternate which ending to use each day, so that half of the time the couple lived happily ever after. Also, he didn't really write the story, he just adapted it from the tale of Romulus and Julia.
I read an excerpt of the Odyssey in English class, and the whole thing as some optional background info for AP Latin. Its English translation seemed a little better than the English translation of the Aeneid, but did not come close to the quality of the Aeneid in the original Latin. I can't say how good the Odyssey would be in the original Greek though.
Most of the books I read in High School were not specifically assigned, we just had to pass a certain number of accelerated reader tests per semester. Let's see if I can remember a few of the things that actually were required.
To Kill a Mocking Bird
The Grapes of Wrath
The Jungle
The Summer of 1787: The Men Who Invented the Constitution
The Lord of the Flies
The Great Gatsby
Beowulf
The Crucible
(In textbooks, some reproduced in part but most in whole

Romeo and Juliet
Macbeth
The Most Dangerous Game
The Pit and the Pendulum
Pygmalion
Oedipus Rex
Canterbury tales
The Tempest
A Modest Proposal
If I had chosen to take AP English then I would have been required to read multiple books by Ayn Rand as well as Virginia Wolfe. (Rosencrantz and Guildenstern Are Dead would then have counted as required instead of optional though.) My sister had AP English with that teacher 4 years earlier though and hated it (even though Rand was not in the curriculum then), so my mother strongly discouraged me from taking it.