Instruct: Classify Amazon reviews into positive or negative sentiment
Query: GREAT MOVIE...although not many know about it

This was a truly great film about a class of high school students who find themselves locked in the school. Unforunately, their teacher never showed and the kids disappear mysteriously. The acting is great, this movie has suspense AND comedy. I t was shown on Sci-Fi only ONCE and i was lucky enough to watch it, then buy the dvd. It's really great, i recommend it to all horror fans!