Is it illegal to make me watch "An Inconvenient Truth" against my will?

My science teacher made us watch it in school today. I do not like Al Gore as a politician nor as a "global activist", and I especially didn't like the clips of the 2000 presidential election (what does THAT even have to do with global warming? Please tell me!). The Simpsons-esque cartoon was entertaining, but other than that I would have preferred not to watch it. To anyone who has seen An Inconvenient Truth, what did you think of it?