This movie touches on...well, a lot of subject matter that would have been fodder for a "Very Special Episode" of network TV back in 1988 when the movie is set. Thankfully with a much lighter touch. But as the title would suggest, we're dealing with demonic possesion here and not just someone who has suddenly gone extremely mean girl.
I enjoyed how it translated the bumps, bruises, and indignities of being a teenager into the typical "possesion" storyline. Also you know that "Very Special Episode" thing where all the character had to do to solve the problem was talk to an adult, and they would be wise and compassionate and everything would be better? Well, let's just say that doesn't happen here. It's pretty heartbreaking.
Is the final exorcism scene corny as all hell? Oh, absolutely yes. Did I absolutely love it? YES.
THE POWER OF FRIENDSHIP COMPELS YOU!
(I feel like this would be a good horror flick for younger teenagers - disaffected older ones might find it a bit too corny. Although, like I said, it does touch on some fairly heavy topics, so be prepared to talk about that.)