Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: painful

The brilliance in this work is in its pain. We all knew Flick in high school, and we all wanted to strangle her little neck. I was very surprised when I saw it thinking that it would be another one of those high school movies, but it is so much more about cruelty, and Matthew Broderick's teacher character's problems with life, and in the fact that he, like the rest of us, wanted to strangle that girl in high school. It incorporates all sorts of adult themes that I was not expecting... his domination fantasies where he dreams of having sex with his student instead of with his wife, his affair, and then in the end he still loses and she wins, and the cycle continues in its inherent truth. A must see, not for the faint of heart.