1. One of the main things that makes America exceptional is that it has historically stood for liberal principles compared to other countries. - Sometimes yes, sometimes no. America is more complicated than that.
2. The public school system is the greatest and strongest bastion of socialism in America and this is a bad thing. - Tough to say. In a certain way, I say yes, in others, I say no. So count me undecided.
3. Among different types of political activism, the effectiveness of zealous passion and hard work is heavily underrated. - Yes, this is generally true in life as well.
4. Powerful individuals and groups cannot be trusted to use that power benevolently and thus must be constrained. - Too open-ended of a comment for me. I'm going to say no, though there are situations where this is necessary.
5. The most significant cleavage in the Israeli-Palestinian conflict in the 1990s was between pluralists and confrontationists. - There are so many different tides of action in that particular part of the world that it's hard to say anything in direct terms, but in general I'll say yes, with some equivocation.
6. The eight years of Bill Clinton's presidency witnessed the most dramatic improvement in America's domestic economic and social environment from the Kennedy era to today. - Nope.
7. My views are morally superior to the alternatives and not just formed due to self-interest, or one of many possible equally valid positions. - Yes.
8. A family with two parents and children living in the suburbs is a desirable lifestyle and forms the core basis of our society. - Yes to the first part, not necessarily to the second.
9. The most important question in the abortion debate is at what point the fetus becomes a person. - That's what it will become as time moves on. Being able to see a "fetus" through various new methods over the past 20-30 years has changed people's minds on abortion more than any picket-waving idiot. Note though, that I didn't say it was the most important question to me, however.
10. Economic prosperity is just as important as political freedom for third world countries in Africa and Asia. - Yes