Although I was in 1st or 2nd grade for that, I don't have the clearest memory during that time. But I know for a fact we did not watch the Challenger launch in class. Which is kind of odd, because it seems like the kind of thing they would've wheeled in a TV for.
However, even though I didn't watch it, I've been plagued by a vague anxiety over shuttle-launches ever since. It doesn't affect me to the point where anyone would notice, but I have a gnawing sense of dread for the crews of those missions.
I think the Discovery was the next shuttle launch I remember after Challenger, and we did watch that. I was still pretty young, and at that time my stomach was in knots and I was half fit to be tied. It was worse back then.
Anxiety, man.