Wow. I don't really remember what I first read - Star Wars was my first exposure, as well as Star Trek, Battlestar Galactica, and Buck Rodgers. I do totally remember my dad reading A Wrinkle in Time to me, along with The Time Machine and Journey to the Center of the Earth.
There were a couple of books that I can't remember now that I did book reports on in elementary. One really confused me, because it was about some high school kids who were time traveling, and at one point that traveled into the future (early 70s). And I was reading this in the 80s and was TOTALLY confused. There was also one about a boy who lived in an underwater base with his family and somehow Martians were involved, even though (I think) it took place on Earth.
As far as books go, I remember reading 1984, Brave New World, Fahrenheit 451, Frankenstein, and Something Wicked This Way Comes (Fantasy/Horror, I know, but still) all in my sophomore HS English class. That was a very good year.